Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2b204f587142f1…

MALICIOUS

PDF

82.2 KB Created: 2021-03-15 21:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f86c68075ab29d52bcf2e5fe87882b4 SHA-1: 757ee92d69786c184a9eaf1823d3ff8383e9a5c0 SHA-256: bd2b204f587142f16c44824438d259c2d932f3dddf8668d841ff1e1e601ce484
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the nature of the link farm suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/award?keyword=dictionary+oxford+pdf+download PDF link annotation
    • https://wudizabilizone.weebly.com/uploads/1/3/4/7/134745746/zeresi.pdfIn PDF document text
    • http://reduslimitaly-official.site/55027802162s61kb.pdfIn PDF document text
    • http://bisolivagamego.22web.org/tamilgun_bahubali_2_tamil_movie.pdfIn PDF document text
    • https://kosazuritejozu.weebly.com/uploads/1/3/0/8/130874521/kaxawanugigugadivow.pdfIn PDF document text
    • http://odemebayisitrafik.com/blog_page_template_freenqr9n.pdfIn PDF document text
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/tukikow.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvakumo/gixUPhd/bloons_td_battles.pdfIn PDF document text
    • http://jobware.pro/kijomasowutiropo5xvms.pdfIn PDF document text
    • https://cdn.sqhk.co/dodirijobadi/hRkriaH/64663012742.pdfIn PDF document text
    • https://cdn.sqhk.co/fowipovoji/ibiaia5/97041492519.pdfIn PDF document text
    • https://cdn.sqhk.co/kazaluxi/hj9kk8g/23098067555.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/john_deere_345_mower_deck_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/best_way_to_learn_how_to_program_plcs.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/4795766.pdfIn PDF document text
    • http://nout-prodat.site/44526490689tjx43.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/jiagicg/ball_blast_app_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/kasapisu/qcyFjcn/driver_vehicle_inspection_report_template.pdfIn PDF document text
    • http://jixelaxoli.66ghz.com/82185146932.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/6580600.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/idyhjja/jugar_standoff_multiplayer_en_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/aYHl95V/islanders_game_6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rabopusafat.epizy.com/48259784040.pdfIn PDF document text
    • http://lowakeze.rf.gd/carly_bmw_android_wifi.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_off000104df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 5232 bytes
SHA-256: 9121a67fea08599fecc4987a8d6acb0315cd901ea208c1199ebbf85867a58dd3
font_01_sfnt_off000116e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E3 10656 bytes
SHA-256: e499552bf93509eae31e7ca88b9cf0c6343cb366083d1d7781d1ae47f47cd6a9