Malicious PDF — malware analysis report

Static analysis result for SHA-256 007462b3ae70ddb6…

MALICIOUS

PDF

64.7 KB Created: 2020-12-15 20:22:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff58eaa647f499733ec3fac937172021 SHA-1: 7b1f9bea6e2bc9c1e814dcf3de584987a55eb877 SHA-256: 007462b3ae70ddb6096d9d6d193f846e96468cdd40b0ed25a9c848f02b1630b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains numerous external links, with one prominent URL pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded links are indicative of a link farm or SEO spam tactic used to disguise malicious intent. No scripts were extracted, but the presence of external links and the overall detection profile strongly suggest a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/aws?utm_term=digestive+system+crossword+puzzle+answer+key
    • https://luwinititik.weebly.com/uploads/1/3/4/5/134587042/kozof-kileroxuro.pdf
    • https://denofunafefu.weebly.com/uploads/1/3/4/7/134750316/zifisivu-rebodu-zibuvof.pdf
    • https://tedovuja.weebly.com/uploads/1/3/4/4/134465286/gosewoka-fiwubejokewe-kigovobivor-tenisoregupa.pdf
    • https://static.s123-cdn-static.com/uploads/4406464/normal_5fcc8a8c60a6d.pdf
    • https://bipejazikapidim.weebly.com/uploads/1/3/4/5/134529651/mesuguzowenoto_xaminuserufam_tixozunatoxok.pdf
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f89ffacbfffa.pdf
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/5315003.pdf
    • https://cdn-cms.f-static.net/uploads/4378161/normal_5fb70db750053.pdf
    • https://fajorisovobune.weebly.com/uploads/1/3/4/7/134752278/girokitixejate-remefufefiraru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3ca35c2c-554f-4261-a8da-4459e631bd5f/the_growing_place_central_sc.pdf
    • https://uploads.strikinglycdn.com/files/1c448c2d-a28e-41f2-8c81-a0b1fcceacea/mazugijemi.pdf
    • https://uploads.strikinglycdn.com/files/f109f603-edca-4d0b-b630-1a86fc4ed904/panasonic_bread_manual.pdf
    • https://uploads.strikinglycdn.com/files/203608bb-5a5d-4393-abf6-54d6d31a114a/kijuwedowubuzeleginuweja.pdf
    • https://uploads.strikinglycdn.com/files/3c8605fb-00f1-4ab3-b93e-979ea8d85309/ue4_aim_offset.pdf
    • https://uploads.strikinglycdn.com/files/3eef1372-560a-4445-9b6a-feaf60c21c8f/disapibotovafupuduride.pdf
    • https://uploads.strikinglycdn.com/files/fdd9e27f-0708-42f8-97db-65a93d7c5ea4/102138902.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b28b.bin
397ead3e530d9d7a802dff1668ed30a5bb83761a445fa3c645abe72a33f6f0dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB28B 5640 bytes
font_01_sfnt_off0000c5ce.bin
7544c23ce34ed740c4476392a6b674e785a1149c79fa17639d93a2f0df3cbd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CE 9892 bytes
font_02_sfnt_off0000e7b8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B8 4324 bytes

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