PDF malware analysis — malicious · 1747f15ba00d12b9

MALICIOUS

PDF

100.5 KB Created: 2021-07-15 21:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 4f64af38a0a164eb4267749672b3d964 SHA-1: 300ab199e1de0b5740bfa15e016ffb1000cde4f0 SHA-256: 1747f15ba00d12b963f2fd13585fac67fdc77710b80e55a91c2ff3fb9100a9ed

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. It functions as a link farm, containing numerous embedded URLs that point to potentially compromised websites. The presence of these links suggests an attempt to redirect users to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9708

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 https://deniz-sogutma.org/img/userfiles/file/mojosevivirowo.pdf In PDF document text
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/0ea09eeaa43c35aae5d0697367c84920/xorud.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a52df0ec4---jojetekedodujetazedowar.pdfIn PDF document text
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4875a39ec3---dilinodigofutusikunozin.pdfIn PDF document text
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/8f7955590d7369025aefd2948287d225/wogose.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0a7a7d65b---17428637112.pdfIn PDF document text
- http://dnepropress.net/files/file/gozulajus.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0544e47c7c---gubizepilalununalobirad.pdfIn PDF document text
- http://thesnowmanicecream.com/ckfinder/userfiles/files/23966022111.pdfIn PDF document text
- https://rts-wm.com/ckfinder/userfiles/files/4325749372.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/25598171057.pdfIn PDF document text
- http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/cdf4889cb9dbd2cd5a15d120759157b1/1475591852.pdfIn PDF document text
- http://yuanyoujie.vip/userfiles/file/62912315404.pdfIn PDF document text
- http://farashimirooz.com/files/binetopuritukunazebewuzaf.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098b9b869a49---2317218418.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160899313d2f8b---51409911819.pdfIn PDF document text
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/253220bd50188a2392a9402ae722ac10/zakuz.pdfIn PDF document text
- http://agama-rc.com/upload/files/70197153256.pdfIn PDF document text
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085bf6b8a46a---jezenudibirezov.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b65073c05ad---zemafileluliref.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f5e69cebd---31253873677.pdfIn PDF document text
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160778a4ac1559---xosemuwaponanazesoz.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16070bd9f0edc5---zolaresuzule.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edd9aae1b10---3907429640.pdfIn PDF document text
- https://deltagroup.bg/uploads/file/bakidaridugopev.pdfIn PDF document text
- https://fullgame.hu/uploads/files/woliv.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=discrete+mathematical+structures+with+applications+to+computer+science+solutions+pdfPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010be0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BE0	16168 bytes
SHA-256: `34837fdfed7e6dc9e8c1ebc45eabef1064a6e89f8cd536305124148a4af1fb29`
`font_01_sfnt_off00012178.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12178	11072 bytes
SHA-256: `8c2dd61b3d2c8000289a9f875d500f20c0a38c5a344da03bd9783d5b36832ec6`
`font_02_sfnt_off00013b23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13B23	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00015335.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15335	18268 bytes
SHA-256: `28eebaedaa1c22ec0a3bee8211c0633462d086fd75ca2a9d5b2ddce154c44f0d`

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