Malicious PDF — malware analysis report

Static analysis result for SHA-256 75cc2fa2a951712b…

MALICIOUS

PDF

87.3 KB Created: 2021-05-06 17:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 77ff752e2051405cd9aa24bf29257989 SHA-1: 214ad06850fd965cc6adfc48fb9c1078524e0e54 SHA-256: 75cc2fa2a951712bde5623e9f0050361acc624839baf454bb2cebbcafcaa3b99
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crophysi.ru/strik?utm_term=mesopotamia+is+called+what+today PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465270/normal_603c6e7aba4de.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/47033240675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478961/normal_6041144a1907b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465555/normal_604ae9397fb97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_60526f5073ef6.pdfIn PDF document text
    • http://lulilafemavivog.mygamesonline.org/gejodavidalur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_6063a38669bc1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5fedd630e7916.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5fcb239ced692.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f4567f2-044f-49db-a759-ce13562f6094/what_is_difference_between_calvinism_and_arminianism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80a17256-22ac-467b-bf0f-d92570b2fadb/why_are_land_grant_colleges_important.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/game_parlour_business_plan.pdfIn PDF document text
    • http://mevafefulasi.rf.gd/busizigapelil.pdfIn PDF document text
    • http://xupikilagi.rf.gd/lavasa_corporation_ltd_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e51a73-ac7e-4f51-852a-10c1309b33b3/english_novels_for_adults_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/heropanti_movie_filmywap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8dfd7e-7bf0-4f42-a432-3a0b36b4c4af/blue_clean_pressure_washer_383ss.pdfIn PDF document text
    • http://bajekixizosi.myartsonline.com/the_everything_business_plan_book.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/79475087346.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/activity_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/jezikorowilagodoxevopixo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117DD 5416 bytes
SHA-256: 75b6224c5d67ee0127f16dbfb855e056a14c4c7b72b2125a20069e7a8bbdc0e7
font_01_sfnt_off00012a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A42 10868 bytes
SHA-256: a7e30b0d67b91058232ffea72c7f3d99d8d76c8922da72415598bce4c2320042

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