Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc029032f4a757cc…

MALICIOUS

PDF

76.0 KB Created: 2021-04-02 07:17:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c04f78d481532849fecd2bea2187b63 SHA-1: ad31e488e3d0131f06f0b5c1a88787c49c8cae11 SHA-256: fc029032f4a757cce1d537f3d7023590edeb2351784e93359ffbbf30b37e5551
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on dynamic DNS services or personal website builders, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/award?keyword=speak+now+1+workbook+pdf+vk
    • http://nibatuw.iblogger.org/jilelezemi.pdf
    • https://cdn.sqhk.co/rebibenizuj/ZjdieLt/anatomy_and_physiology_unit_1_test_answers.pdf
    • https://gokaxavel.weebly.com/uploads/1/3/5/3/135316782/bilulipirofaminepab.pdf
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/7174007.pdf
    • https://zutafemaz.weebly.com/uploads/1/3/4/4/134478566/c60bb204621dc21.pdf
    • https://cdn.sqhk.co/jagibuvat/giHgck4/adderall_lyrics_popp_hunna_genius.pdf
    • https://vobokalonumenu.weebly.com/uploads/1/3/4/6/134656332/rixepuxezor_xobulutewet_lagegilodegurij_kelabu.pdf
    • https://jositaloj.weebly.com/uploads/1/3/4/0/134042718/finoxoxizimupa.pdf
    • https://cdn.sqhk.co/lisakopew/jhfibty/hydraulic_brake_system_design_calculations.pdf
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/muzureja.pdf
    • https://cdn-cms.f-static.net/uploads/4501495/normal_602bb47ee0bdb.pdf
    • https://giwitororozesal.weebly.com/uploads/1/3/4/6/134652081/gafoxuweji.pdf
    • https://xibatelilon.weebly.com/uploads/1/3/1/6/131637149/rulozusapetano-bumidomor-madotoratavumap-wefutoredoruvi.pdf
    • https://cdn-cms.f-static.net/uploads/4445880/normal_60350d800d148.pdf
    • https://cdn.sqhk.co/mojupesonon/qgJhhWh/tennessee_titans_calendar_2019.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_3e4ea170ec9344659599b8a73b7b47ce.pdf?index=true
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_c0cb43589a8947fa84ac760a3dac9335.pdf?index=true
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_92f384c340d3407fab57d6e34731b204.pdf?index=true
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_5acfc281e83244cda608b67ffd95a382.pdf?index=true
    • http://jokoligu.rf.gd/nilevuguxikexiloweda.pdf
    • http://zojimako.rf.gd/how_s_it_going_yahoo_answers.pdf
    • http://gotuwutusefaw.epizy.com/alginate_beads_formation.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddba.bin
d16e06d513214e2caaa964df58ffa7733c1a5ecc4208e89a3938f7c243816539		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBA 5336 bytes
font_01_sfnt_off0000f00f.bin
d3e3e47fba50c5160209f7e95860a00515407c12cf94b3b1103987eabb3461f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF00F 19868 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.