Malicious PDF — malware analysis report

Static analysis result for SHA-256 080ef09438f2c195…

MALICIOUS

PDF

74.5 KB Created: 2021-01-17 17:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a606563c8d22b19e8aa2b7097dd8521f SHA-1: 77a1cebd52c3b55575efc5bd0854e85681656683 SHA-256: 080ef09438f2c195d8b4c7666beaa63771e143baca46f3e767dbf14f8deff2ba
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous embedded links designed to redirect users to malicious websites, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the ML_NYX_PDF_MALICIOUS classification. The document's structure suggests it is a link farm, leveraging disposable hosting to obscure the ultimate destination. The primary attack pattern involves luring users to potentially harmful content through deceptive links, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=old+chisholm+trail+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5fa82d513d33e.pdfIn PDF document text
    • https://wifojulov.weebly.com/uploads/1/3/1/4/131438113/2b5899a9d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5fffcb9f2bc35.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/Ojd1xej/peace_equalizer_not_working_after_windows_update.pdfIn PDF document text
    • https://tasototunone.weebly.com/uploads/1/3/4/7/134755659/4505266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462736/normal_5fcc01e88f8dd.pdfIn PDF document text
    • https://site-1176671.mozfiles.com/files/1176671/59048183615.pdfIn PDF document text
    • https://site-1247871.mozfiles.com/files/1247871/broiler_poultry_farming_business_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/3EagfnG/antihero_skateboards_t_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/hckidij/brimnes_ikea_dresser.pdfIn PDF document text
    • https://site-1168360.mozfiles.com/files/1168360/top_zombie_killing_games_ios.pdfIn PDF document text
    • https://jasezanita.weebly.com/uploads/1/3/1/6/131637239/lolubekonagasu-gorogazabe.pdfIn PDF document text
    • https://gebulofafilo.weebly.com/uploads/1/3/4/7/134717894/65c15b0534.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/hbjjghr/rabilatujobewolimowugup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446512/normal_5fc0d8cf2619b.pdfIn PDF document text
    • https://site-1084153.mozfiles.com/files/1084153/like_father_like_son.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/L4vigV2/64517742179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486037/normal_5fb4443b879a0.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/folexapurilowe/cystic_neoplasm_of_pancreas_guidelines.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_off0000e7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A7 5340 bytes
SHA-256: e5e0b814b92c215e5b2260f697a146d487bb720eeb786665e22dbfabf15eebb5
font_01_sfnt_off0000f99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99E 10376 bytes
SHA-256: 836844cda891134ef917061c0acdfa6dd01a2cf7f311a298f483c7d6c9a6d61a

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