Malicious PDF — malware analysis report

Static analysis result for SHA-256 38cae696774c2837…

MALICIOUS

PDF

81.1 KB Created: 2021-03-14 13:47:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 060e42e98fb4f2b1176d4422dfa4646c SHA-1: 9db70e2aafddb7d9a1dcdfbb825f2eb28017db0d SHA-256: 38cae696774c283745ed879a3fd50b46edcfc4163e6c25b4c63eb33089eb6078
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 0.9993

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://resalured.ru/strik?utm_term=how+much+does+a+bale+of+hay+weigh+uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445125/normal_6000e5ef880ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_60461dbaae351.pdfIn PDF document text
    • http://universityru.fun/46064446982f9pwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418362/normal_5fdf2ecd27a51.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/4098828284.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426407/normal_5fcd5dff2fca3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458848/normal_60233c5cd0131.pdfIn PDF document text
    • http://pekibexuvipeve.scienceontheweb.net/wings_of_fire_book_14_cover.pdfIn PDF document text
    • http://rezubodojel.medianewsonline.com/the_cambridge_dictionary_of_christian_theology.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409239/normal_603c5a5c8533a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_600fd74b35abc.pdfIn PDF document text
    • http://ductsunlimitedins.com/towezagujugegi2k3b6.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/vnsgu_bcom_books_gujarati.pdfIn PDF document text
    • http://prognoz-football.club/their_eyes_were_watching_god_quotes_chapter_1811cgo.pdfIn PDF document text
    • http://max-lifting.store/58087559124t8rx7.pdfIn PDF document text
    • http://tgesheff.xyz/powuzomesupax9tznt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_5fd14630b5b6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zedofaxuboz.onlinewebshop.net/82301299704.pdfIn PDF document text
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_267ec50373264c519b171558bc118e1d.pdf?index=trueIn PDF document text
    • http://gupatevefojip.myartsonline.com/98132191789.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/dch_file_t_ting_nht_sang_ting_vit.pdfIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_6260cf197f974dc28b8a60a9da546a83.pdf?index=trueIn PDF document text
    • http://fazobelo.onlinewebshop.net/sakewelubiposinepe.pdfIn PDF document text
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_0e74926a40e44f25a176cb439178a093.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_off0000f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8ED 5696 bytes
SHA-256: 629c4a5be430fb91b8492dd143c370bb602a28e5323e079810932ae9df44cf7b
font_01_sfnt_off00010c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C46 12416 bytes
SHA-256: 36d9053ac937565db3f1d0327e2a843bddeaf9f9c1d305fdf65ade79cce84f81

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