PDF malware analysis — malicious · 22980177309dadbe

MALICIOUS

PDF

146.5 KB Created: 2021-06-27 07:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: e9f601661523e9bce5e1700f3d404a25 SHA-1: 4b18cf6df75b881d59cbba12204fd6e95fb59f30 SHA-256: 22980177309dadbe0a630e6d81200a92fcd481b8a762cc5e42d47cc6b1358b28

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of a URL with a 'utm_term' parameter indicates a potential phishing lure, possibly related to medication.

Machine Learning

Nyx PDF Classifier malicious score 0.9246

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://oniceh.ru/uplcv?utm_term=anxicalm+2mg+tabs+diazepam PDF link annotation
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609bee01ad82a---35618880803.pdfIn PDF document text
- https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/352b9a6aebfadfd3673d26aa72847fd5/buremafejofudoxin.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/1953feeikp27agus8s0lbojg5e/zedapizigeg.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9dd271df426e515eb4cbc7519692ac8b/80139372596.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/90c9d483c05b7c376aa9672f1d4e2d11/79570810569.pdfIn PDF document text
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac99f8d5a7---42138138579.pdfIn PDF document text
- https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/e60d9c698d527ea0a778727a57e0f335/lipadagariwi.pdfIn PDF document text
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b6e5c63a442---16008116985.pdfIn PDF document text
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add527c7479---44260188934.pdfIn PDF document text
- https://weeb.nu/userfiles/file/35312799363.pdfIn PDF document text
- http://vanillasky-ch.com/images/files/jizobizosodesuwejutubiji.pdfIn PDF document text
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/60824bd7586950dbe92fcc931050c6c8/11482014334.pdfIn PDF document text
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/8ajq096g6uj25aeop56uei2s96/buzov.pdfIn PDF document text
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc4bbad0fa---nogunorebasuxajewagi.pdfIn PDF document text
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/3d8b813a8ec8c4d76ef20d505ba3402b/10506628907.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/prsn7k11b0kq52cnmg3fbj8pi4/49022848078.pdfIn PDF document text
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/459e0948c926f43e1e6cacd6ff2804a7/jenanusapemutixogigi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086306d2b5b1---batep.pdfIn PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/6h8iu82rcqeikfmkdqealgloej/vemolus.pdfIn PDF document text
- http://fittbike.hu/files/file/5395807173.pdfIn PDF document text
- http://ofipapel.org//ckfinder/userfiles/files/sawobeluvinunerova.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160be327a85f0b---rududelusajovimosi.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/1d0f6976cb97062ab9590f4799d60f49/11011272386.pdfIn PDF document text
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3a45b302d---44208367162.pdfIn PDF document text
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/86bb035f7a96c152d9fe1389e091b657/rejadumax.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cdb8ca13e---7700346303.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001bdbc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1BDBC	11040 bytes
SHA-256: `f225c6151eec55f89a49bcea4960f194196ef69b0f37f5d2b18d7073b928b8e5`
`font_01_sfnt_off0001d72a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1D72A	21560 bytes
SHA-256: `5505bfdc457aa18b6d775a4dcdadb285d862d4c49e1b52750acd6dd4a634b794`
`font_02_sfnt_off00020c9b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x20C9B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off000224ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x224AC	16160 bytes
SHA-256: `61893c6f5a4ed8be90b59e62ba5f7845fe3f782be61d2927f64273611613f2a4`

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