Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3854fd49da4951…

MALICIOUS

PDF

77.1 KB Created: 2021-06-10 16:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b738317e8e26249a21d595f1bfd294f0 SHA-1: 01962d0cfb533e83f98b0ad12c690d2d9ce1b81b SHA-256: 0c3854fd49da4951ddf4094640da81bfbc4eb01f40fc44cdb2e6655c85d843bd
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The embedded URL is likely intended to trick the user into believing they are accessing game-related content, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/pbw?utm_term=cooking+fever+casino+3+gems
    • https://cdn-cms.f-static.net/uploads/4384821/normal_600c0223204a6.pdf
    • https://gejosabuvin.weebly.com/uploads/1/3/4/4/134457948/6173969.pdf
    • https://sapefesoj.weebly.com/uploads/1/3/1/4/131453354/fenode.pdf
    • https://static.s123-cdn-static.com/uploads/4388293/normal_5fe0b7af94fbb.pdf
    • https://static.s123-cdn-static.com/uploads/4471985/normal_5fc7fb587ab0c.pdf
    • https://mukeremu.weebly.com/uploads/1/3/4/3/134316251/6753712.pdf
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/fdbf769d.pdf
    • https://sovejugi.weebly.com/uploads/1/3/4/6/134652237/ca11b8673fb88.pdf
    • https://nefalitarula.weebly.com/uploads/1/3/4/3/134308949/e5d25dd4e1489.pdf
    • https://static.s123-cdn-static-d.com/uploads/4445745/normal_60b56fc882ba9.pdf
    • https://cdn-cms.f-static.net/uploads/4500669/normal_6030613d81a2d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://komogabovuwa.pbworks.com/w/file/fetch/144807555/62441334910.pdf
    • https://uploads.strikinglycdn.com/files/5595e92d-af99-4cd0-a23d-fe91bf6f8e8b/85443728849.pdf
    • https://uploads.strikinglycdn.com/files/b100295d-e98b-4b58-9aee-fb86c435e1be/kegabuduzalamo.pdf
    • http://funinupun.pbworks.com/w/file/fetch/144412035/headway_pre-intermediate._workbook_with_key_5th_edition.pdf.pdf
    • https://uploads.strikinglycdn.com/files/9ef97b04-a78b-4f76-8eb5-641e13d3b3c2/62470557167.pdf
    • http://tozuxexap.pbworks.com/f/83551818367.pdf
    • http://bolotomatub.pbworks.com/w/file/fetch/144942750/william_shakespeare_sonnet_116_analysis_line_by_line.pdf
    • http://rixepal.pbworks.com/f/duzokefuxidaruzaz.pdf
    • http://tusoxefum.pbworks.com/w/file/fetch/144902754/bharatha_rajyangam_in_telugu.pdf
    • https://uploads.strikinglycdn.com/files/c6265c2d-a780-4e76-9bfd-4fed83f647ef/limafuzajawuvewuwu.pdf
    • http://zanopadik.pbworks.com/f/39693122507.pdf
    • http://kibumezi.pbworks.com/f/31796488707.pdf
    • https://uploads.strikinglycdn.com/files/239222c8-7bb7-4cf9-876f-40ff2d0feb49/my_passport_ultra_1tb_user_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef6b.bin
31d0c2af649bf883485c2e3ff50dad131312a993e4321c4e328d9a9d6cf20334		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6B 5360 bytes
font_01_sfnt_off000101a6.bin
9fdadf3a833218c1632b835bae9c521c79b3166ebac3d8036dc332a9bd7c9512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A6 10884 bytes

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