Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a379f05736f9d9…

MALICIOUS

PDF

75.6 KB Created: 2021-04-29 22:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: af8e9b28cae511e32d3d89975c2f8e29 SHA-1: 517e5c945dd3ed69f06aff00d9b3afa57165a90d SHA-256: 46a379f05736f9d999ed2158e0130fe180ac3a3ff2491dd6569529c059a6ddef
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 0.9996

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://baarspo.ru/strik?utm_term=brooklyn+colm+toibin+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385636/normal_5fd0f47a67be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_6051fd228e2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_603853b680722.pdfIn PDF document text
    • http://vojamugoju.22web.org/bronchiolite_obliterante.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480182/normal_603819ac3145c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416659/normal_5ff4c932a2362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424692/normal_6015dae9addb5.pdfIn PDF document text
    • http://vatasefapulik.iblogger.org/latest_android_version_phones.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_602be7adb8dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_604d9f8700fcf.pdfIn PDF document text
    • https://cdn.sqhk.co/vetejevibas/hjeghjb/73230943690.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/agcqIjb/deeeep._io_beta_evolution_tree_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/neganobasiwe/heK1Tib/shankar_mahadevan_devotional_songs_naa_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/jiledexuda/3njChdJ/goodreads_giveaways_rules.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450421/normal_5fcef25fe0d06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bopulamumu.rf.gd/faxosipawodim.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/50257937892.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/68198147573.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/santa_biblia_plenitud_gratis.pdfIn PDF document text
    • http://jejomozukiro.rf.gd/the_graphic_design_idea_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/what_size_is_30_in_jeans.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_off0000ebca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCA 5052 bytes
SHA-256: fd142f7c6548f759a003182f734e8c745c2488262c8241bb11a9a0be70c3e5d3
font_01_sfnt_off0000fd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD02 10636 bytes
SHA-256: bff01fad1f3ae3a06485a48c9c1f13da4894d62e917fff0985f89aa91a22dbbd

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