Malicious PDF — malware analysis report

Static analysis result for SHA-256 c126285693ad0a2c…

MALICIOUS

PDF

90.9 KB Created: 2021-03-30 06:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 301a692b00ebde66051ae687216f947e SHA-1: 27761fb9b96aa8e6824dbc084264492ef248bef5 SHA-256: c126285693ad0a2cf19dc16256a95d706f7701b85e55c45175406ae548c8a661
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'dugedepap.ru/award?keyword=breakthrough+basketball+defense+pdf'. This suggests a link farm or SEO poisoning tactic to direct users to a potentially malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://dugedepap.ru/award?keyword=breakthrough+basketball+defense+pdf PDF link annotation
    • https://pafovawulawagi.weebly.com/uploads/1/3/4/5/134581771/wobijid.pdfIn PDF document text
    • https://bokosemebejira.weebly.com/uploads/1/3/0/8/130813317/8950819.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fe16abb473ba.pdfIn PDF document text
    • https://dalenorilesa.weebly.com/uploads/1/3/4/8/134858788/nipozelozuraza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5ff08a145f26d.pdfIn PDF document text
    • https://gedijidejejew.weebly.com/uploads/1/3/0/7/130775336/muvefurunijazetujapu.pdfIn PDF document text
    • https://pojojupekofep.weebly.com/uploads/1/3/4/7/134754506/nokudovet_birobupavokoni.pdfIn PDF document text
    • https://wixetaduzem.weebly.com/uploads/1/3/4/4/134471786/1186541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474475/normal_60369c158efa8.pdfIn PDF document text
    • https://xojumemusip.weebly.com/uploads/1/3/4/0/134018475/lifeki.pdfIn PDF document text
    • https://vazanopika.weebly.com/uploads/1/3/4/8/134896022/pifed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/s107_helicopter_replacement_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/tanunabibezivedirosul.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/the_art_of_problem_solving_vol._1_the_basics_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27fde28c-ca34-4e40-8cc5-18a628f0c708/xisarinawavola.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/arduino_uno_r3_ide.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/are_apple_books_free_to_download.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/34662221535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d0eae04-6225-4922-9b15-b2df6d74e4e1/wulamewidamizova.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/81388244898.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/disclaimer_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/22744576327.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11069 5556 bytes
SHA-256: a79a5b7db1d7a075155e25cd1ae8f6d5bc0f2d20ab10e0c913731745d089a4e1
font_01_sfnt_off00012345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12345 10784 bytes
SHA-256: 89cf16b8b27bc0d5dfd7d26d700c2dc775685d2c43c8b2ee6cc5314632a4a5d6
font_02_sfnt_off00014868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14868 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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