Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e158d69dc1fb4a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-29 22:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c9dd6cc71c8740956bc9aed1403e7428 SHA-1: 5d159ea0aefcc892bb0008a7cff370206b1db819 SHA-256: d1e158d69dc1fb4ab12d9585a8d5f1a4762ecc4e6e2c7d284a7484b854e1f699
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to improve search engine rankings for terms like "dragon mania hack tool". The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites or download further payloads.

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://bologen.ru/wix?keyword=dragon+mania+hack+tool+free+download+no+survey+no+password PDF link annotation
    • https://cdn.sqhk.co/bopibege/jcxchgo/58317740640.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/jcfgf2y/asteroids_2020_june.pdfIn PDF document text
    • https://cdn.sqhk.co/matikefateri/ji46jdi/ramexizikixotejililuvez.pdfIn PDF document text
    • http://helplnstagramoffice.com/acca_f9_bpp_revision_kit_2019s7hdo.pdfIn PDF document text
    • https://cdn.sqhk.co/viwukepato/dDgdhji/first_lite_guide_pants.pdfIn PDF document text
    • http://netewe9.xyz/how_often_should_a_prius_get_an_oil_changenfokz.pdfIn PDF document text
    • http://susurrus.space/249857961980hbjh.pdfIn PDF document text
    • http://agencymedia-ig.com/kumep0k6nv.pdfIn PDF document text
    • https://cdn.sqhk.co/visipapafef/jcijtPA/performance_appraisal_definition_by_flippo.pdfIn PDF document text
    • http://podarokinsta.online/pegopulofekewudzjics.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/mjfy8jj/planets_number_in_astrology.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/vapelurowar/xebaboxunobujig.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/kittens_game_guide_wiki.pdfIn PDF document text
    • https://c5b3e1fc-3b55-407d-a8d9-2bfa6c9015c1.filesusr.com/ugd/6df244_ed3a2abcc10c499fa8a5f76d721db6c5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pogolo/82771675675.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/fibejutamupe.pdfIn PDF document text
    • https://e1cf253b-b3af-4135-a675-1c3c021177f9.filesusr.com/ugd/111c46_6fc777e2f6034263998b95a6f9b9a636.pdf?index=trueIn PDF document text
    • https://025b4bf0-2906-4f5f-8a0f-6d4b68fc9518.filesusr.com/ugd/148ee2_ad691659b86f41909bae12d6398fb4bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luropi/27032839901.pdfIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_6ab03584adce4d348c24b2bff8ad7882.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jipowumat/how_to_setup_call_forwarding_avaya.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/zovel.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/screwfix_titan_chainsaw_manual.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_off0000f84b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84B 5884 bytes
SHA-256: c9172b5b0b0248b03fb504bd387454d85e36fd1f1a578966db807c38838d9735
font_01_sfnt_off00010c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C56 11232 bytes
SHA-256: 7a77157dc58e29506bc105cb96f2e04b21e8f1f546dccae5ea8ca4c569e4da8c

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