Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6b2e532d4cbbc5…

MALICIOUS

PDF

60.1 KB Created: 2020-11-11 10:06:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6da60496441472f497fa9fb7e3180510 SHA-1: d70b5f6d60e2f0d81c124c7f2932e593b6e4e4e3 SHA-256: cc6b2e532d4cbbc51ddab7cd9358fcc84f819b91e1a304e38339e9350adb3df5
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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/strik?keyword=dragon+ball+devastation PDF link annotation
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/maguxefux.pdfIn PDF document text
    • https://gifogesedex.weebly.com/uploads/1/3/4/6/134625351/lenukarapaxenuf-vufetoboku-zimodosojepale.pdfIn PDF document text
    • https://tojaluteder.weebly.com/uploads/1/3/4/3/134384479/fejateporewawetaw.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/7e10b24f.pdfIn PDF document text
    • https://xegiwisupanax.weebly.com/uploads/1/3/4/3/134367095/7718fe9a184.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.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/nitirew/6_letter_words_that_begin_with_r.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/cakewalk_sonar_8._5_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/9681544493.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/84423680918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5bf7e05-cf9b-4468-b912-64f08fd27cd4/byron_katie_the_work_helpline.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_off0000ae89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE89 5192 bytes
SHA-256: 31a7e27a29af40e4f073cbb8abd7883bc31c90ce6ff0fa01a9ad63b2d975ff4a
font_01_sfnt_off0000c049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC049 10356 bytes
SHA-256: 6ca10ca06ff54b1e35d0722c9e042e423f18a643cc368f4138717ea7451bec7d

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