Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be78293ccbb193b…

MALICIOUS

PDF

165.5 KB Created: 2021-03-29 00:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 39e4c2940e62606ecfc776a1781a1966 SHA-1: 5584f9155bcbe2aa498df630a546c1605afb16d8 SHA-256: 3be78293ccbb193b8422298ea59eee2c6dd9757c634c36f100b4f6f9604c39a9
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of an external URI pointing to 'xajibur.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the 'SE_URGENCY_LURE' heuristic indicates the document's content likely employs deceptive tactics to prompt user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://xajibur.ru/wix?keyword=inuyasha+naraku+incarnations PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426679/normal_5fcbbeef339a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426558/normal_60550c6fcda45.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/5igij3q/wallpaper_ben_10_xlr8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382003/normal_601fab86ce1f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381344/normal_5fdd92d496160.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5ff28788c17c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422659/normal_600832b84024e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_600d1ba8e4842.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_6000542b09197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485702/normal_6031982f162d6.pdfIn PDF document text
    • http://djami.ru/42243669383hjl4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403404/normal_6056e655a1009.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/hb2ijfm/formgroup_remove_all_controls.pdfIn PDF document text
    • http://gatorama.site/kitchenaid_gas_stove_with_double_ovenu3v1t.pdfIn PDF document text
    • http://phtech.site/do_i_watch_fma_or_fmab_firstmq9v7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_e8f3a8b7dcd04bb38a3f6abb28bce226.pdf?index=trueIn PDF document text
    • https://fa53e508-d88d-41cb-897c-7a5b6f1bfcc3.filesusr.com/ugd/361045_85d77ad7f41f4c10a020edcfbf3b74c4.pdf?index=trueIn PDF document text
    • https://1261df91-4e32-40b2-8b8a-4050d3c54cbb.filesusr.com/ugd/df69c1_f351fc42c7f747c3a3afdc6898bd88d9.pdf?index=trueIn PDF document text
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_d83391bfe5d24ded961a03ee93a0989d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23DDF 5148 bytes
SHA-256: b4247f4782ad69c058dc1e8a3e6f151e8bd33abd2037dead1e8ea395da84312a
font_01_sfnt_off00024fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24FED 4956 bytes
SHA-256: def2abe13be4880f949cda926c548e60fd9070a71edc98786b7938eb78f60250
font_02_sfnt_off000260ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x260CE 11396 bytes
SHA-256: 49984f458b14c4e6fa8b10739b73fa06b0efeafcd6ad032a9f4c444edd8c5c72

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