Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee7374601aa8f15…

MALICIOUS

PDF

74.9 KB Created: 2021-03-03 17:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 135fe2b1390135fac043bd780a4c6ac1 SHA-1: 9b77cad7d7703b4d74b483839d41f025c028021f SHA-256: 4ee7374601aa8f1543720152afc91fae06c3970a8971daf462a896d38fa269ff
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs that redirect to potentially malicious sites, including one that appears to be a link farm. The document body, though partially corrupted, suggests a lure related to 'coconut oil hair mask' to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=how%20to%20do%20coconut%20oil%20hair%20mask PDF link annotation
    • https://puzagejezazi.weebly.com/uploads/1/3/4/4/134465952/xozigawivogirif.pdfIn PDF document text
    • https://novigavaze.weebly.com/uploads/1/3/0/8/130874354/7861633.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/cidocJt/mod_minecraft_1._16._1_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_6035c7202b68b.pdfIn PDF document text
    • http://mozodulo.iblogger.org/13799593695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495402/normal_603c20abeff97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5fe8f307e0bd2.pdfIn PDF document text
    • https://narusipanunajix.weebly.com/uploads/1/3/1/0/131069819/0a5bc4d83dd.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/girutubigogajerabojeg.pdfIn PDF document text
    • https://cdn.sqhk.co/suxunuke/jrD0Oji/54819887504.pdfIn PDF document text
    • https://lurenosofen.weebly.com/uploads/1/3/0/7/130740325/ladigarede.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/T47EZig/truck_racer_xbox_360_rgh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_6038b66d9f7a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guvenaverelud.epizy.com/alka_seltzer_rocket_template.pdfIn PDF document text
    • http://fovawipemezipu.myartsonline.com/85221182009.pdfIn PDF document text
    • http://totuxivez.onlinewebshop.net/what_does_yellow_triangle_mean_on_security_system.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E9 5296 bytes
SHA-256: 0d3fb395dfb26f7b5ba07bed60256bbf5e74c55b6d95b45c20574ed274474fa1
font_01_sfnt_off0000f9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CB 10688 bytes
SHA-256: 168092d54b06d0b51eb0e3472f19dd62681fed314cc0b07afc21cec0cebc1f30

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