PDF malware analysis — malicious · 9ea014bdfa3e22c6

MALICIOUS

PDF

80.7 KB Created: 2021-06-25 21:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: a5b93163307535fd6dab4b5030785d8a SHA-1: 96ecc5570ec103bf53b1490b08f5064db2ad6906 SHA-256: 9ea014bdfa3e22c6d4673bcbbe9f8b04cb50f4fb8891a81ed4ff331b78768503

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of links pointing to websites hosted on compromised CMS platforms, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

Heuristics 6

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.
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 http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608922fcbe9f8---resapolojizemigewopoxuzek.pdf In PDF document text
- http://thepokewave.com/uploads/files/dubekivijapov.pdfIn PDF document text
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a2ea9b6e8---sobupozomadesorozig.pdfIn PDF document text
- https://alshamiltrading.com/alshamilfiles/file/90349337234.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097c55e5e8fa---28466499971.pdfIn PDF document text
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/7165dfd7ebac1f9e6519b92006df6a84/64808603477.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/f81cedd1e3ba9482fa534018c381781a/58164788014.pdfIn PDF document text
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/rgnilqpm31am83g87b1utkp8s7/17833687164.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/2b2d1679348e4fa5e18e86587cee8a42/1593214984.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c787c90de3---20070665002.pdfIn PDF document text
- http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15112548652.pdfIn PDF document text
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/30713f858ae968ccfa6e113faba95b01/bumixotarumevorufefeki.pdfIn PDF document text
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/b46ispj1i3tafemdi1gvdh04lu/55191596053.pdfIn PDF document text
- http://chroscina.com/userfiles/file/wuvakefebamisawopobil.pdfIn PDF document text
- https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/9bb5671b6e98d79c2d39dbccf3328f67/89625409564.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091d8f7b09a1---80459634043.pdfIn PDF document text
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/16079a385e8b64---1286405408.pdfIn PDF document text
- http://allycatering.com/userfiles/zexaliwudazigefamed.pdfIn PDF document text
- https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/7f6865299c27a069656e5020d084352e/gapawapemanadimimiru.pdfIn PDF document text
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/311ctk4nd1pr90n6cu95spkvmq/rujiwibutokegij.pdfIn PDF document text
- https://bahia-group.com/ckfinder/userfiles/files/goboz.pdfIn PDF document text
- https://bd-sokolovska.eu/userfiles/file/mebepuxiwowen.pdfIn PDF document text
- https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/bacf2a87b14f4d92edaa6bb027167f2f/rojipok.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af3bde04f2---vegegagidavegomejez.pdfIn PDF document text
- https://bursac.net/userfiles/file/galubikurirokowi.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/d96c83259c3bdbbf6168b680a4b3cd8c/6460170206.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=motorcars+of+the+mainlinePDF link annotation
- 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d902.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD902	10596 bytes
SHA-256: `4786aa7555f0c606b1a07423fe0faa747c51285bd36a64d87dada4ca30a4db94`
`font_01_sfnt_off0000f101.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF101	16964 bytes
SHA-256: `cbb42202a4e03339cf92d22fa8163b037a3fec4a6f2276e4d1d8df684c24c503`
`font_02_sfnt_off00011d31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D31	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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