Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fccac4898f5c624…

MALICIOUS

PDF

71.6 KB Created: 2021-01-06 08:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c30b3a88d979bdbd728bf77b3cd4c5a8 SHA-1: 2a6bed9eb466dc581f06f51443010afc7de944ce SHA-256: 6fccac4898f5c62495ee228b13fc18014b10e1f4ef796b78cbddab09b9d1b949
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffnew.ru/aws?utm_term=beyonce+fedora+hat+formation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5fb32db92a7c4.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/fs0ihgj/17265249769.pdfIn PDF document text
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/90bfb0b1aa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378831/normal_5faa5a1ade1fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411683/normal_5fca9d6720c69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5fd5f4fd13356.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/jefL3U5/download_game_animus_harbinger_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/hcxrjhi/lufipuxezejusanifakega.pdfIn PDF document text
    • https://cdn.sqhk.co/nakokixega/1dlmSWo/9033010498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407733/normal_5fc7e28e18230.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/gciePic/76211397311.pdfIn PDF document text
    • https://bapoxipen.weebly.com/uploads/1/3/4/6/134684349/wolibu_guwopolivomifen_jezemidanikil.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/UTFhiol/download_flappy_bird_on_ti_84.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
    • 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_off0000cc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC25 4992 bytes
SHA-256: df577081505e8e1b09746751171de3350991146972c4ebcc432d95ea62a7f3d0
font_01_sfnt_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 11048 bytes
SHA-256: b09262874631396ed3e06d47757273287eed75bd0ae6186c3c0f732fad5b3fd5
font_02_sfnt_off00010221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10221 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.