Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3c89aadd00f376…

MALICIOUS

PDF

75.0 KB Created: 2020-12-28 03:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7fc9958d9f0a6042406fe7964b88f5c1 SHA-1: debe26a47bdb8bdc92396ae435fe01498ba42ec6 SHA-256: 2b3c89aadd00f376426adee657ae7e44c81a8735a5a39084c13c8bcf8634338d
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The embedded URLs and the document's deceptive content indicate an attempt to direct users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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=jawbone+mini+jambox+manual+reset PDF link annotation
    • https://rikelakejif.weebly.com/uploads/1/3/4/8/134885243/loturigeximus.pdfIn PDF document text
    • https://neverazu.weebly.com/uploads/1/3/4/9/134901342/4886225.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/pijofakubexuwawetif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381735/normal_5f8b1f2d8a1f5.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/nNihgej/build_mode_cheats_sims_4_mac.pdfIn PDF document text
    • https://fezimadi.weebly.com/uploads/1/3/4/4/134487715/guvorekavozata.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/80e4d4031969.pdfIn PDF document text
    • https://difekubo.weebly.com/uploads/1/3/4/7/134714923/6f81e0922.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/d1iidig/real_drift_racing_unlimited_money.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/nedakiloput_bilofevuwuv_siweferog_vifinufawovuteg.pdfIn PDF document text
    • https://kenumobubedu.weebly.com/uploads/1/3/4/3/134370592/1553b14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469359/normal_5fc6ba6c1a83e.pdfIn PDF document text
    • https://judemozosuduj.weebly.com/uploads/1/3/4/3/134306717/7459171.pdfIn PDF document text
    • https://zibizunazop.weebly.com/uploads/1/3/2/7/132710786/kineperuzip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d03cc6-9609-4807-83ab-45cebb3303d2/roluwugewafiki.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/apocalypto_movie_free_mp4_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3845e0f6-f51c-4be0-9760-7ad780ea3283/64464135473.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D1 5196 bytes
SHA-256: 5b382a5953a0f815f9c836f247e9221f79246e3fc7afd2137c013d7f9dc845ee
font_01_sfnt_off0000fa79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA79 10512 bytes
SHA-256: adde8363b170ebb764ac77239c90468dddea3b3c7a01eaddbb2c899b5cbf079f

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