Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea606dc7a0f0b94…

MALICIOUS

PDF

68.3 KB Created: 2021-03-27 23:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 55f361f513cb36d05e965cf05c86cfbe SHA-1: a2ba2c52239eb6a8a06520b794b7003bff776d48 SHA-256: eea606dc7a0f0b941674ac3da7599e3203c1f48dd191c8d3ae5f994b0eba60b9
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the link farm heuristic strongly suggest the document's purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=chicco+pack+n+play+manual PDF link annotation
    • http://barajofa.mywebcommunity.org/59925813263.pdfIn PDF document text
    • http://lozejebivo.scienceontheweb.net/importance_of_being_earnest_summary_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/SgicKig/87111507516.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/descriptive_adjectives_in_spanish.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/rotopuforova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408866/normal_6059d281a1d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_5fd9e6d188215.pdfIn PDF document text
    • https://cdn.sqhk.co/bezugisav/bsibvih/sojuti.pdfIn PDF document text
    • https://cdn.sqhk.co/valumikeg/hjkHTu2/32962806375.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/XDAWTii/vemumapesup.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/7dNcxjb/tutafofixove.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/types_of_writing_genres.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c948e902-2437-43f3-9f1e-7aaad30688a7.filesusr.com/ugd/464a75_8620d786cbc64b9490b45ec80a3cc4ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bokelur/minecraft_crafting_guide_book.pdfIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_a1c3bbb69129498bb32cf41dc2dde0cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/batiku/mail_merge_template_word_2013.pdfIn PDF document text
    • https://6cdb29d4-22ce-4aaf-9e51-562b59d50851.filesusr.com/ugd/1b20fb_876a6e5de70340f0bc906998fa97e7f9.pdf?index=trueIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_192209e8f0264ac997e1b4c0f478ba75.pdf?index=trueIn PDF document text
    • https://a529afa0-707c-494d-9cee-e9df2360aa12.filesusr.com/ugd/a6e48a_8f60f5d32fa64e3a81a3614859f43e6d.pdf?index=trueIn 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_off0000d2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FD 4968 bytes
SHA-256: 4536eb0b1d633149a24be14c995db4b7561b3a9ede53659397d6ed8759ec5a1e
font_01_sfnt_off0000e3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C8 9484 bytes
SHA-256: 504523f54bc5574d2cb4ad074e4ee8ee12deb6eba1f82323cf3fdef15c58eb84

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