Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2f7f521ec14c05…

MALICIOUS

PDF

79.5 KB Created: 2021-02-19 23:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8120bd13c902345e436ddfe113b49f52 SHA-1: 3d6335c1ab51cf7ad6c3e6d62e7b904f16c10744 SHA-256: ad2f7f521ec14c05c6f635134ef44aacaebddd92fa2fd13ada1010d83c4619bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, many pointing to disposable hosting, and includes a call-to-action phrase suggesting a download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a payload or lead the user to a phishing site related to cracked software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/strik?utm_term=euro+truck+simulator+2+1.34+crack+free+download PDF link annotation
    • https://tavulejitozusol.weebly.com/uploads/1/3/0/8/130873759/e9492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_5fd7d205ab489.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_600284dd4c274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_6023ff6169989.pdfIn PDF document text
    • http://fixegemixinazoj.22web.org/lexokazumevufedusetava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417408/normal_5fc7c38fbe6dd.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/6VpLFih/zokotixolubogeliwuwevig.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/eggXjd4/lojusazajerazugasogize.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/jDihdjf/new_snake_zone_worm_io_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424646/normal_601e878191d15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5fcbd1b410e3f.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/wifJ3ja/zufizevematasoropaxanixu.pdfIn PDF document text
    • https://zesalefol.weebly.com/uploads/1/3/5/9/135994098/5eafcf422d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_5fdba611acf26.pdfIn PDF document text
    • http://detolenikalopaj.iblogger.org/wilekoniwezarafugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410731/normal_600eda315299d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://logiwabu.epizy.com/enchanted_2007_full_movie_300mb.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_off0000e1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A1 5748 bytes
SHA-256: aac6c3fb54d301828e9e78580e199fc76c99d61ef4e7f11fc20e2ea43d6a41c3
font_01_sfnt_off0000f534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF534 4152 bytes
SHA-256: 1ce4978460262215806807ad555be1e7aefd902937b1ed40bcad92a0da2a3ca3
font_02_sfnt_off0001047a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047A 14004 bytes
SHA-256: 5fdecded25ac706f6134ac33418dd540c38b8679d32362009d82d1eed23498b1

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