Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa8199a4ff0db12…

MALICIOUS

PDF

43.6 KB Created: 2020-11-08 06:06:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: f042a0c110cd04a4c14dc268bef21fe8 SHA-1: 8705e8a327bc8af17456b0a4abef0e86821eca2a SHA-256: 6aa8199a4ff0db12bb09bd01059a823ad749997489739e6ea6b4467e15fd1622
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafficel.ru/123?keyword=get+a+free+iphone+no+survey PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5fa0af75a4648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_5f8df3279b463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379217/normal_5f92a57eb22ae.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/rimugavo.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/5832647.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zokuzodidud_bemabozerewir.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000697a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000697a.bin)
    • https://uploads.strikinglycdn.com/files/9e2c3a7c-0b27-4c5f-b247-bbab7c9e0f37/deep_star_six.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38b3c91b-27a9-4615-a014-8e6f6313e7b2/zetaveluteza.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/bokadaregozuvezezezipet.pdfIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://zivepezugese.files.wordpress.com/2020/11/3223449371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/796169b6-3c6b-4beb-9759-0a2196baa257/woxajom.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/star_stop_think_act_review_or_success_through_accepting_responsibility.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 extracted file (font_00_sfnt_off0000697a.bin)

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_off0000697a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697A 5152 bytes
SHA-256: 6cf1d764f40d55f3e05fe116941119c2b32d6d9b9ddbb720fcd4bdd12d3c5df2
font_01_sfnt_off00007b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0D 11216 bytes
SHA-256: 56e9b0fd55cc67405fdfda53e4ab14da97395d1cd4fd3cda8861c723c5d3f76e

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