Malicious PDF — malware analysis report

Static analysis result for SHA-256 29027acd74ac259b…

MALICIOUS

PDF

71.0 KB Created: 2021-03-28 07:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 46d54fb2f575aefed2c2603eb6b2a459 SHA-1: a72f3121bc532d63518237a82e6a4e366a5a4baf SHA-256: 29027acd74ac259b1ed342402a592cd9a1db63c62e50f0e882859c1fcb75f189
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many of which are likely part of a link farm designed to distribute malicious content or phish for information. The embedded URLs suggest an attempt to redirect the user to potentially harmful sites.

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://seumenha.ru/wix?keyword=periodic+trends+test+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402717/normal_604748c6cda07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445879/normal_6001eb9112bd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_6055374603e48.pdfIn PDF document text
    • http://tuwavetatifida.iblogger.org/what_is_body_composition_mean.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425009/normal_5ffd81caadacc.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/buwosevax/kabalafujul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ada0f04-5d2b-4ce9-aebe-4c53a071ff27/pogetuzikuseturemeb.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/97650420276.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_f05eecdd655a45dfba1895af84f946f2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/damerirazib/grace_united_reformed_church_dunnville_ontario.pdfIn PDF document text
    • https://86b7bb9a-6a0b-496c-a062-e8aa60c365d0.filesusr.com/ugd/dcf311_c3bfd41ebcdf4ecfa05aaaea10e97cc8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zijivevip/cisco_meraki_mx64w_datasheet.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_ecd80c5a61c5438da7b5ad65b16c342b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/pexakazanixomexan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1ca55f-26ae-458e-9d82-90be8af5c974/how_to_clean_my_viva_water_cooler.pdfIn PDF document text
    • https://c2245d91-bd3f-4016-bed3-1da34bcfd793.filesusr.com/ugd/9a652e_b57ab51d7d5249268516d5347e5e1662.pdf?index=trueIn PDF document text
    • http://pinamagowejut.epizy.com/kenenabuxapegonedobudesut.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/data_scientist_interview_questions_and_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_off0000d89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 4996 bytes
SHA-256: 4fc663d61ce34e596390fe4859f6b4654d58697d7aef214c45a68123cc32084d
font_01_sfnt_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 10884 bytes
SHA-256: 8392d702832ddf962e4fd5e28d5db552c83cff88a1c5081800903dc96ee775fc

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