Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad0fd0e6fb61e26…

MALICIOUS

PDF

90.4 KB Created: 2021-03-22 12:32:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 56188902ce34971b6dc72b65cdb3ba37 SHA-1: 27bcd09f996aa8c0a6fbf18c4941102d57b5be5b SHA-256: fad0fd0e6fb61e26927d14b20946d57f89504ea968529303963111120177c9dc
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URLs are likely used to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/aws?utm_term=2006+honda+odyssey+driver+side+sliding+door+not+working PDF link annotation
    • https://lonunirixug.weebly.com/uploads/1/3/2/7/132710494/jinabewonisitav.pdfIn PDF document text
    • http://creditpm.com/english_grammar_in_use_fifth_edition_amazonufh68.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/92icDjj/zumebonidavil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447880/normal_5ff67f3a113d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_5fd0fdf8d0459.pdfIn PDF document text
    • http://tb-films.ru/zulajotowunalumalaxeuj8s2.pdfIn PDF document text
    • https://xumipapabof.weebly.com/uploads/1/3/4/6/134609146/wigiri.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/divanuduxerife_wewonavadozafok_lezon_zuzasezupad.pdfIn PDF document text
    • https://rititebavoxufi.weebly.com/uploads/1/3/4/7/134705535/fulesodif_ketivudimubanaz_vemigo.pdfIn PDF document text
    • https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/1292269.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486206/normal_60052a1a57d3a.pdfIn PDF document text
    • https://fotelosalif.weebly.com/uploads/1/3/4/4/134463398/b4ceb4f8.pdfIn PDF document text
    • https://vaxulisexo.weebly.com/uploads/1/3/4/6/134600260/sazezutopuputuge.pdfIn PDF document text
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/sajusakofomivu-gufev-deluda-sinug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421335/normal_5fdefda09116d.pdfIn PDF document text
    • https://pareniwidof.weebly.com/uploads/1/3/5/3/135313819/722221.pdfIn PDF document text
    • http://nikaold.site/planeswalker_dnd_5el1xra.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456387/normal_60377af2099ae.pdfIn PDF document text
    • https://cdn.sqhk.co/naruxibe/hgsTZgh/color_changing_light_bulb_app.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/5NJlog4/wix_pricing_for_nonprofits.pdfIn PDF document text
    • https://luligokim.weebly.com/uploads/1/3/4/7/134715748/jiwonosozuvijusepujo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wefadep/smart_irrigation_system_using_arduino_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/paphiopedilum_species_the_essential_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11415 5524 bytes
SHA-256: 140d766e3d138af39ff1f7553ee1f7f028349f144377758d54957b48dead14b4
font_01_sfnt_off000126e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E0 11344 bytes
SHA-256: b8f87e29fcc162ea1002b3ace9455f12fa3220a40708786293516673dbaaf905
font_02_sfnt_off00014dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34