Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cad20e1ad476fc7…

MALICIOUS

PDF

90.0 KB Created: 2021-04-10 08:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 317fcfa345415979d44986caaa402fa0 SHA-1: c83b83a84f7afd3693b205828602962d1da4af51 SHA-256: 2cad20e1ad476fc76d70fe12c591a9fc5ee6100922818a19605081f30c896ccf
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 0.9998

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
  • 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://dafemum.ru/strik?utm_term=butterball+electric+turkey+fryer+power+cord PDF link annotation
    • http://strahauto.website/zewugurebocyeod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380531/normal_600952e3d38e6.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/HgiLgoN/classic_hits_radio_uk.pdfIn PDF document text
    • http://rineset.xyz/mobebaxuxikuduvezuj2ldt.pdfIn PDF document text
    • http://itayoga.space/nanugukevonod79dsp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_60084a611be56.pdfIn PDF document text
    • http://levantemosaic.com/charles_taylor_sources_of_the_self_sparknotes50gx0.pdfIn PDF document text
    • http://fresh-ita.space/maths_worksheets_10_year_oldsczxol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474999/normal_60334156ef7ba.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/jhcpQii/hydrogen_oxygen_and_water_element_compound_or_mixture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389394/normal_60460d9eb9f75.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/rebesudanolo/rupakuxepe.pdfIn PDF document text
    • https://99f4a897-b223-4833-863a-50ad465ba5d5.filesusr.com/ugd/8e2371_9972be0e016b4041aedf80dd81c4cdc8.pdf?index=trueIn PDF document text
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_49fe78ac8587490282cde4365f0d0a72.pdf?index=trueIn PDF document text
    • https://1eb42bdc-3da6-4b32-b75f-4382f1721f8e.filesusr.com/ugd/35474d_1b3f9eceaf474287aa6c2fe4b4296238.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec0e406e-c116-4c93-805c-48e69fc90857/kelowovuzujaxemolapinuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03c8f4a-69f7-48b3-b35b-1a49e5c1dabc/american_gods_season_3_episode_4_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/pukixonukiduf.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/himeji_castle_fgo_farming_guide.pdfIn PDF document text
    • https://2e03c77f-99cc-4591-9807-54d8d49c9ce6.filesusr.com/ugd/759733_8c5b3641835c4892960d7c46f271f2d6.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

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_off00011b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B70 5416 bytes
SHA-256: 36a4cae285f7d63fbf94891936b883494401cc479f89fba3856d45757b8fdffa
font_01_sfnt_off00012e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E07 13364 bytes
SHA-256: e11313779cbee1ceeac2bb6cb3d4693cce7a06361e450db34a49d8d61575ed21

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