Malicious PDF — malware analysis report

Static analysis result for SHA-256 35be1db41276b6ce…

MALICIOUS

PDF

79.4 KB Created: 2021-05-28 00:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e59dc4f9f218e8e2454b2020f05a9f7e SHA-1: 3c9988ef2b3e674a539ccc773a5103f9616e0097 SHA-256: 35be1db41276b6ceb2abd69197cb64e60059b1f1ffce673828b9f457b956ce38
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to direct users to malicious websites. The presence of an external URI pointing to 'xezojetit.ru' further supports this, as it is likely a distribution point for malware or phishing content. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://xezojetit.ru/strik?utm_term=zombie+roadkill+3d+hack+mod+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489257/normal_6002056741efb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451551/normal_5ffc7f96cff69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448550/normal_5fd949c62a146.pdfIn PDF document text
    • https://taduravepe.weebly.com/uploads/1/3/4/7/134714340/bemevivefoginil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_605a06e870e98.pdfIn PDF document text
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/aa835a9384.pdfIn PDF document text
    • https://jikumuwalomaj.weebly.com/uploads/1/3/1/3/131383204/7819876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389830/normal_60473beb3753d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389097/normal_5fe5ed129241c.pdfIn PDF document text
    • https://jivafizet.weebly.com/uploads/1/3/4/7/134743279/bemabubode_gaguveku_xosekaninan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_604441a7ea5a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378853/normal_5feebdc5cc493.pdfIn PDF document text
    • https://janiwekogakopa.weebly.com/uploads/1/3/7/5/137500868/8b783.pdfIn PDF document text
    • https://gojolukok.weebly.com/uploads/1/3/4/4/134455450/4441615.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fcf6ed5385b0.pdfIn PDF document text
    • https://surafevigenirax.weebly.com/uploads/1/3/4/6/134610600/6782768.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/b8068d51-da68-4abf-9d6b-cbc1ec17b6fa/human_genetics_concepts_and_applications_10th_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf2b112-6223-4dca-836c-93bf6ab311a2/after_we_collided_online_full_movie_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec0c7a2-8bf4-4823-a776-bbfc92a7a4a9/halo_bassinest_swivel_sleeper_essentia_series_nautical_net.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b671dc-df6d-4248-bdea-5c1bfc848936/viriparuxabekavituko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9381145c-103e-41a2-9d77-4b2ecbe42c9f/reported_speech_exercises_for_class_8_cbse_with_answers.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_off0000ea3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 5416 bytes
SHA-256: ac18fa83f39cf53b19962685cefe76453c44b8bb4a333336e1fbb59b4fe465dc
font_01_sfnt_off0000fc8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8E 16664 bytes
SHA-256: f190a1f07d7767d4ebadb6cf9e5d5a3da3ef929aa76ebf4687ba5ca1339c8634

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