Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e13325e55cd199e…

MALICIOUS

PDF

43.1 KB Created: 2020-11-08 09:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 690ba1839a2797b3c6691928a1d2f569 SHA-1: 156aa76f5a455873d11b39a8a772f79b6f26a8a5 SHA-256: 6e13325e55cd199e2bbd9e80dfa3df8a1b7c79374e6059c933d46dae9ccb9597
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, containing numerous external links, with a primary lure pointing to 'https://traffset.ru/123?keyword=chapter+4+ecosystems+and+communities+4-1'. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates a pattern often used in business email compromise attacks to trick users into making fraudulent payments or changing banking details. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://traffset.ru/123?keyword=chapter+4+ecosystems+and+communities+4-1 PDF link annotation
    • https://zemodeviwiteg.weebly.com/uploads/1/3/4/3/134351550/a75ebf6f2ce579.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/ffecf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kizelanurul.files.wordpress.com/2020/11/mikoxirugotaramavemuvuzu.pdfIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.pdfIn PDF document text
    • https://pozaxatugifu.files.wordpress.com/2020/11/77027405366.pdfIn PDF document text
    • https://fewumewola.files.wordpress.com/2020/11/bopuzorazesobedonetomago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12441905-5984-4d1b-9c57-a1fb45a2f62e/62441932411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a112976-4b54-4225-a2ea-e8a8373c7e88/bad_ideas_about_writing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af0fe1b4-d896-4202-82c9-e1fe728ed49c/cat_mate_c3000_manual.pdfIn PDF document text
    • https://sirilab.files.wordpress.com/2020/11/tabifenid.pdfIn PDF document text
    • https://kirozaber.files.wordpress.com/2020/11/saxon_math_7_6.pdfIn PDF document text
    • https://riroxoposej.files.wordpress.com/2020/11/carlos_navarrete_comediante_biografi.pdfIn PDF document text
    • https://davitiruwax.files.wordpress.com/2020/11/itools_4_key_license.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_off00006a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1A 5460 bytes
SHA-256: b1cdf13de623096bf6ad45a7df2b9decc6b0fd1ba45769318a70fa68a59a9a1f
font_01_sfnt_off00007c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C94 10152 bytes
SHA-256: 3d9b98fa5bf13be882a74bf857754ac8b71baa70f974ea9c8506c0f38f4a6e05

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