Malicious PDF — malware analysis report

Static analysis result for SHA-256 330f062e1ada1ec2…

MALICIOUS

PDF

120.8 KB Created: 2020-12-03 18:27:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 67f5a2e9b2dccef3b76d3ea1b4f4cae9 SHA-1: bdbbffec24da04fff0b71a9cc7d02fc3bad17ecb SHA-256: 330f062e1ada1ec233ef2a0885ddd47c28fcd1906cdb28aec76233c402534d2d
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/123?utm_term=henda+debate+flow+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5f9e8a7b4a4f3.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/samesuseliju.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/1069874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490534/normal_5fbb3ea0b83f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/volitokuvufoxujomepesileg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd3eaa0d5fd03cbc5b256e/1606237867821/clash_of_clans_air_troops_strategy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2eceac6d96458362f573e/t/5fc54f3208845d09243a1453/1606766387050/m12_3_8_ratchet_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/xekan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d8d024b06a7eb3fedc56/t/5fc2f75a1972c46e3c005ca5/1606612827494/elize_du_toit_rafe_spall.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfdb415687f52b6b7b2913/t/5fc2b9a6f81c9a2a0cfbd0d1/1606597030704/used_tires_colorado_springs_near_me.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0a96b474932ca26988ee/1606224536415/11950040333.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd061a3ca23154c95c9f6c/1606223386701/price_comparison_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/bujarekara.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_off0001713f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1713F 14256 bytes
SHA-256: 3b27fe9ee3e07c97a5f0aececb05ee61fcc2ea69b80e2bc369b311568e85f322
font_01_sfnt_off0001a05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A05A 5092 bytes
SHA-256: 570bb2e49ad922c011c966d7e85bbe08cace156fefc2ccf0a0cb769883bf9845
font_02_sfnt_off0001b1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1BB 10640 bytes
SHA-256: 22d8eab35b420f58157bf828d789f64fdc6276323a596fa1734ccbde14679562

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