Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8849be993574f8…

MALICIOUS

PDF

74.5 KB Created: 2021-03-03 11:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6447b7dd657499dd580a72d00f8e750e SHA-1: bb0c8a31c32a9c7b601e85301f6710016a88d1de SHA-256: fe8849be993574f858c972ace90f112e2322966b13d513769f236aeda410b76b
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded links to disposable domains, suggesting a link farm designed to redirect users to malicious content. The heuristic 'SE_SECURITY_BYPASS' indicates the document may instruct users to disable security software, a common tactic in phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://ponafet.ru/strik?utm_term=lumion+for+sketchup+2016+free+download+64+bit PDF link annotation
    • http://sdfafq.info/classical_conditioning_theory_in_educationspb17.pdfIn PDF document text
    • http://popularchoice.space/rovaxago1qo.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/bosch_1617_router_template_guide.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/57299106075.pdfIn PDF document text
    • http://mazafaka69pussy.online/lodekipawexb8l7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418991/normal_5fd10c4cbd8f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378836/normal_5ff547d39deea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481985/normal_5ff2a9051bda3.pdfIn PDF document text
    • http://9gusevshop.space/xakipufosupoba8n4p6.pdfIn PDF document text
    • http://photoforce.ru/jedemekofabofowunemvlxz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwosutodegadax.onlinewebshop.net/que_hace_un_lider_daniel_goleman.pdfIn PDF document text
    • http://tuminexozuvino.atwebpages.com/puma_air_compressor_oil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/82604775515.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/symbol_ls2208-sr20001r-ur_driver.pdfIn PDF document text
    • http://gegilifopom.myartsonline.com/belegusavenotu.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/90321970419.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/diabolik_lovers_more_blood_game_english.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_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 6200 bytes
SHA-256: 5bf06d1f62b84c22720ea2f3b7a9ff9d503d472c18e099f0aab75b17f4029d6f
font_01_sfnt_off0000f8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A7 10552 bytes
SHA-256: f12af0bbb172e0d62de60ff13a4a200434e06e46c4446428ce90487f954690e1

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