Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d02b06b0b3cb6d8…

MALICIOUS

PDF

78.9 KB Created: 2021-03-15 23:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f96db451b5f91020b3a9f33cd33ac9da SHA-1: 54fa7ec0e6ea005a44d861c7f03810239422ac99 SHA-256: 8d02b06b0b3cb6d8796f572177cf0ff0e95835d11a958f5eac05b7d32eccf576
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/123?utm_term=beauty+plus+apk+full+version+free PDF link annotation
    • https://nedamekiwuj.weebly.com/uploads/1/3/1/3/131379605/6920c705e5648.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/tumogipeburilaval.pdfIn PDF document text
    • https://tasikedojawepu.weebly.com/uploads/1/3/4/4/134473564/0b67b2d389.pdfIn PDF document text
    • http://resipowepo.getenjoyment.net/gedadunigugipalukokevi.pdfIn PDF document text
    • https://vafarisitoguv.weebly.com/uploads/1/3/0/8/130874489/zegemadunaj.pdfIn PDF document text
    • https://tegedibinatamam.weebly.com/uploads/1/3/5/3/135350324/sidosux_fopuna.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wixanarer/45588379638.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/82110279259.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/eclipse_ide_for_selenium_free.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/70062593513.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/wirutavojefexilumaduduxo.pdfIn PDF document text
    • http://birukuf.onlinewebshop.net/watch_the_white_princess_episode_7_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/how_to_tie_an_adjustable_knot_for_bracelet.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/fejupixep.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/loxamusemowuzomuwop.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/96034956421.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B3 5052 bytes
SHA-256: c6d6641bbbcc5522b70f9ac997142943865e3124c729f9ca88f280a5d2ad415b
font_01_sfnt_off0000f8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FE 11984 bytes
SHA-256: 369598b9decfc52efdd382e1d7f2d716ffb71d10a95ad24a8f7b15c1cbeaaa13
font_02_sfnt_off00011eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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