Malicious PDF — malware analysis report

Static analysis result for SHA-256 480c9f60a5af3bd2…

MALICIOUS

PDF

73.0 KB Created: 2021-04-03 17:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 914d5578c03be0773612b4148401497c SHA-1: e58e9114cbaa6671c163e3c8c8c44a17eeffc326 SHA-256: 480c9f60a5af3bd24d125dbeca8e90110f76d985fb43e1e5eebe263f54102cde
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm with numerous external URLs, suggesting an attempt to redirect users to potentially harmful content or engage in SEO manipulation. The presence of multiple external links on disposable hosting indicates a low-quality, potentially malicious distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/award?keyword=conspiracion+anunnaki+pdf+gratis PDF link annotation
    • http://waranijovuv.sportsontheweb.net/best_way_to_lose_weight_calorie_counting.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuluxaja/dC2Gnhi/cash_flow_projection_format.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/ijgchjm/24836104902.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/jjz2ihZ/pathogenic_bacteria_definition_english.pdfIn PDF document text
    • http://ritixibetono.mygamesonline.org/99475553488.pdfIn PDF document text
    • https://razivixa.weebly.com/uploads/1/3/4/4/134498077/rugubojot_zemasekevif.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/volijipobafarigakagijiw.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/lnwcggZ/romivara.pdfIn PDF document text
    • http://solifixogalek.mypressonline.com/bohemian_rhapsody_piano_part.pdfIn PDF document text
    • https://cdn.sqhk.co/muzedikerum/iiughfd/slow_motion_video_editing_software.pdfIn PDF document text
    • https://kosemezaped.weebly.com/uploads/1/3/4/7/134711049/jebeziwipexif.pdfIn PDF document text
    • https://cdn.sqhk.co/boremagu/b7iixjc/66807622433.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/70031780290.pdfIn PDF document text
    • https://nevutero.weebly.com/uploads/1/3/4/7/134716167/e840c86a.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/jdKjaif/warhammer_fantasy_battles_editions.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/jYhgRji/warzone_player_count_june_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dc010c70-835d-4b56-8cb0-1e1bda7cab64.filesusr.com/ugd/fb576b_1e5260f8e82040979b1d2dba96e2980b.pdf?index=trueIn PDF document text
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_ab21a6c6a6a746049e41dbed9d2a6023.pdf?index=trueIn PDF document text
    • http://rixigor.onlinewebshop.net/76428987508.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/mimo_beamforming.pdfIn PDF document text
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_6844f29550544692a588820695123194.pdf?index=trueIn PDF document text
    • https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_524d574c03f9499091988b4d6f4ff5d6.pdf?index=trueIn 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_off0000c8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DC 5260 bytes
SHA-256: 71a6092812a4d09a3a94babaffa07fb6a5f62d2a557655fdef1feaf356ff92ea
font_01_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 12032 bytes
SHA-256: 0b55c7210aed943ee27929beda77ebc8f043fbbc27c27df9a2543ff3bf448da8
font_02_sfnt_off0001013c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013C 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3