Malicious PDF — malware analysis report

Static analysis result for SHA-256 a21faa302a79788d…

MALICIOUS

PDF

84.6 KB Created: 2021-03-05 04:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d315e32e3edc02c6ecbe0f5fdf30517b SHA-1: 3c9eaec5226bdf1686536a02fa23bf0663494b2a SHA-256: a21faa302a79788dc90572a846cb39e65eee2a398f71ac67a755d4726b5a6225
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to a website that appears to be part of a link farm or phishing scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites, likely for phishing or scam purposes.

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 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://mezovuduw.ru/award?keyword=which+religion+believe+in+odin PDF link annotation
    • https://zejosawazir.weebly.com/uploads/1/3/1/8/131856185/sajobetepogotajak.pdfIn PDF document text
    • https://kisofoga.weebly.com/uploads/1/3/1/3/131383553/polebetab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478408/normal_60417366b7e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403804/normal_5fe7a3130f523.pdfIn PDF document text
    • http://laludinemolat.sportsontheweb.net/suvujoxisox.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/Eltgcja/draw_a_stickman_epic_walkthrough_level_3.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/peavey_vypyr_30w_pedal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454049/normal_602c58bbe6fe8.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/WLzDdu1/download_game_drift_zone_2_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/di27JYY/project_manager_remote_jobs_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417653/normal_5fe0d715915c1.pdfIn PDF document text
    • https://putusura.weebly.com/uploads/1/3/1/6/131606782/6f19f8d77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sukedil/agro-_ecological_zoning_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f5d0b2-4bf5-415f-ac44-f7f4d1f2c64b/66014053754.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/86743189740.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/5905369123.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/kabbalah_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf0a860-6b38-4461-aa87-2cbf4726af00/the_education_of_little_tree_summary_chapter_4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10458 4732 bytes
SHA-256: f9c0ab9eb689b635347481c6d603cde4d8f7360fe9368f4900cec4649f567a28
font_01_sfnt_off0001145c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1145C 10252 bytes
SHA-256: b5b552b2a85bba3660daaa771d8cef48c87ed3fc44af1482642200b1fbcc08e0
font_02_sfnt_off0001370f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1370F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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