Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc3ab8286134525…

MALICIOUS

PDF

103.2 KB Created: 2020-12-10 01:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a522fb331fca90500586b1626679792b SHA-1: bb62e24fabdb8798cc8d176586919b987c545345 SHA-256: bbc3ab8286134525fb831ce169e450a8d096e004b500f77c7e687363dd755193
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are to other PDFs, suggesting a link farm or SEO manipulation tactic. One of the primary URLs points to a site with search terms related to game cheats, indicating a potential lure for phishing or scam activities. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://traffine.ru/strik?utm_term=yugioh+gx+duel+academy+codebreaker+codes+working+cheats PDF link annotation
    • https://kirimanadawa.weebly.com/uploads/1/3/4/3/134383910/sekiladataj.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/mojugonerijeme_pubijo.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/fegejogu.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/zerujenaxatukep.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/8dc64631-dd4b-4a6f-84bf-bfe0ceffba06/saitek_cyborg_keyboard_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d81008a-3c6e-4115-bb16-80d7eb3babcc/jd_hse_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d350de4e-73b0-4ad4-9233-bf2e02b914b8/zevonoted.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceea773299f0c54387f32/1606217383479/zudevonubivavupi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfdd379c08c7f2b9f192e/1606221268714/fuvotuvezosuvonalolatad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3537e55-fe86-48b5-9a6f-28d2056d44aa/losoti.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/all_r_words_in_the_dictionary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/426b7546-747f-46e1-858a-07bdd86774ce/malco_theater_columbus_ms.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29f5c5bcb0228a28d70dc/t/5fc380933f75b1664341543c/1606647955565/the_walking_dead_all_episodes_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b53fc6229360ecb2a747/t/5fcb00e66e74d26c6ff74c9a/1607139559574/extreme_car_driving_simulator.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000151cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151CB 5780 bytes
SHA-256: 9d6408be4ef94366573ebd59a376f8560862cd41aca6c26ff98d819a137fd44d
font_01_sfnt_off0001656c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1656C 13404 bytes
SHA-256: 49271fcc6f15fef1fe461d3c60f4b1b86c3446c3a6152e5b2e0fb0203acb23d6

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