Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4184ae570101a50…

MALICIOUS

PDF

85.8 KB Created: 2020-12-11 03:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9acd1dbbeba29b65120f5966e4f8f1e3 SHA-1: bee342f271a16b00a46cd287674fbda6bbe63f5a SHA-256: a4184ae570101a5053cc461deccede8954a857f495a08a68186c98a9927cf566
274 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. It uses brand-impersonation credential phishing. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wikazire.weebly.com/uploads/1/3/0/9/130968935/wosixi_vikose_mefet.pdf.
  • 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://traffmen.ru/strik?utm_term=plasti+dip+gallon+white In PDF document text
    • https://wikazire.weebly.com/uploads/1/3/0/9/130968935/wosixi_vikose_mefet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc0f79e2e34347c7044618a/t/5fc2b38208845d0924e2910d/1606595458883/voxexep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67bdfa8793968642e8bb7/t/5fce04b2f94b6402b24004e0/1607337138525/prison_break_the_final_break_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/lefimitezizafanewipat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0df209955c744b53b696b/t/5fc36664cb3e0f5771bbb137/1606641254115/59044351558.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/70496886560.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba71e9fc3622d52139a6/t/5fc50460f8cdb769c6811a8d/1606747233181/how_to_remove_red_lipstick_stains_from_carpet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc512c9bf71053ccb2aa307/t/5fd1932cac13f65f660e5358/1607570221521/life_after_death_tvb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5b088c99b6d37a76c18/t/5fca26e79309303fb8399102/1607083755361/red_ball_game_4.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/aquabot_turbo_t_jet_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC4 5220 bytes
SHA-256: 3f09b3a552371a4b9c1dd3879a504590e1afe9d0171d801e56b90a6c2ac9cf10
font_01_sfnt_off00010096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10096 12180 bytes
SHA-256: e9c0d52dfd9d2b561a4081ab4261e977530fb0607bb18c1177073e23a3283a64
font_02_sfnt_off0001299e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299E 16060 bytes
SHA-256: eb67323a3edc51f073cf7ae7c668a4400309481d93a41d1ca3bfc03d889966df
font_03_sfnt_off00013e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E74 2768 bytes
SHA-256: a2a181130040a1155b964fb31923a0034d3685a1ff4d07623f9df8c689609b1f

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