Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a109155550c1a1…

MALICIOUS

PDF

95.3 KB Created: 2021-02-17 14:52:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2fb0357f71f452188017494d160f9355 SHA-1: 95177dd907ea935b23a26bbcd29abc04285ad500 SHA-256: 06a109155550c1a12d11b9cf624a92e89d3c56107206590f30bab87396808d9c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting it is part of a link farm designed to distribute malicious content or phish users. The embedded URLs point to domains that are likely used to host further malicious payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/strik?utm_term=pioneer+deh-80prs+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/puburikob/ykjipt4/alone_sad_quotes_in_marathi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5ffdbe0a4830c.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/HiephcF/king_of_avalon_gift_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/ahUsRU5/44325147644.pdfIn PDF document text
    • https://nirejabepifu.weebly.com/uploads/1/3/4/2/134266024/wilosuluse-kekemif-namobogeb.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/ibvihig/tepaluritovanenapafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fc5d1a08b7ac.pdfIn PDF document text
    • http://mofolaz.22web.org/android_mobile_3d_games_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5ffab21891dde.pdfIn PDF document text
    • http://xigegojaliku.iblogger.org/good_morning_photo_whatsapp_love.pdfIn PDF document text
    • https://mesasijodise.weebly.com/uploads/1/3/5/3/135315214/9250047.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guwajogijifode.rf.gd/2d_game_kit_free.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001375a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1375A 5780 bytes
SHA-256: b0dd796752810588f4c5df1477e3cbd6e7b3453412fc4ed967ab7ef16ec61a4b
font_01_sfnt_off00014a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A9D 10964 bytes
SHA-256: 749b1e5282b8e40f8aec1146a69b8468143a0d677fbc20ca98f14196aab25d2d

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