Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6e7958144ae117…

MALICIOUS

PDF

74.4 KB Created: 2021-05-19 19:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: acd625426bbaad5712ba8c52084f92cb SHA-1: 18a106c34c58e0e620924090faa8970daef53336 SHA-256: ae6e7958144ae11792a1579ca418d59cc650b24fde220805914115cb8994b7b7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 6

  • 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 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.
  • 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://xezojetit.ru/strik?utm_term=ver+juno+pelicula+completa+en+espa%25C3%25B1ol+latino PDF link annotation
    • https://bogibopedazite.weebly.com/uploads/1/3/4/0/134018154/7953062.pdfIn PDF document text
    • https://vexifodukegaze.weebly.com/uploads/1/3/5/9/135977609/2904202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_602c2938ae671.pdfIn PDF document text
    • https://ziwedalonom.weebly.com/uploads/1/3/5/3/135325023/xubaxulaxiserinex.pdfIn PDF document text
    • https://varavedonenen.weebly.com/uploads/1/3/4/3/134316352/teludepanegatavu.pdfIn PDF document text
    • https://sulewonabesonu.weebly.com/uploads/1/3/2/6/132682327/2377111.pdfIn PDF document text
    • https://kanapajuzusuma.weebly.com/uploads/1/3/4/5/134589940/rasab.pdfIn PDF document text
    • https://dorizudoxifon.weebly.com/uploads/1/3/4/3/134330452/2924720.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/8203288.pdfIn PDF document text
    • https://kobuvenaxoz.weebly.com/uploads/1/3/4/7/134762740/5cf980c885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484804/normal_602acb33a0557.pdfIn PDF document text
    • https://xufidevudog.weebly.com/uploads/1/3/4/3/134389214/wavavowu.pdfIn PDF document text
    • https://lipemegovaw.weebly.com/uploads/1/3/4/7/134766771/3324836.pdfIn PDF document text
    • https://maninuwag.weebly.com/uploads/1/3/4/5/134577581/9092750.pdfIn PDF document text
    • https://dolojimopa.weebly.com/uploads/1/3/4/8/134887070/0d6a0.pdfIn PDF document text
    • https://xaxomawiso.weebly.com/uploads/1/3/5/3/135329970/8896605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_6037fada960d5.pdfIn PDF document text
    • https://molapoji.weebly.com/uploads/1/3/4/0/134096941/vinakijurenaripuz.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/dirinovururemoget.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E6 5332 bytes
SHA-256: c519ff2db9f893c160175f2e2a322a1627808200ace0d89f799a52db032f232b
font_01_sfnt_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 10456 bytes
SHA-256: a3cc3999de2742501b19fb3d7f029bc14ea99f50c1bca105ff6c5f15380f2092

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