Malicious PDF — malware analysis report

Static analysis result for SHA-256 a581673416257ae9…

MALICIOUS

PDF

57.3 KB Created: 2021-03-02 05:31:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1faf021953f7a665b21078dcafba02f9 SHA-1: 9ad41132199140ba1b0329bfe54d4eb0cef8d645 SHA-256: a581673416257ae9b87468fa732a5a9183c85eb7b45d2a128f087e42ff2221a9
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which are hosted on disposable domains or link farms, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains keywords related to sales and product names, likely serving as a lure to encourage users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8253

Heuristics 4

  • 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
  • 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://xajibur.ru/strik?utm_term=chocolate+warehouse+sale+philippines PDF link annotation
    • http://rosutob.getenjoyment.net/10074969137.pdfIn PDF document text
    • https://zupikadi.weebly.com/uploads/1/3/4/6/134667234/9082614.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/kelogugokozipo.pdfIn PDF document text
    • https://pegujugadul.weebly.com/uploads/1/3/1/6/131637136/lozobenisek.pdfIn PDF document text
    • https://cdn.sqhk.co/tefegegesuxe/ibgeyge/wire_thickness_calculator_dc.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/vizio_sound_bar_bluetooth_password.pdfIn PDF document text
    • https://muwegegedagus.weebly.com/uploads/1/3/0/7/130738526/zavabuvamozove.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/gchhm6v/carlsen_weltraum_vr_app.pdfIn PDF document text
    • https://divojalu.weebly.com/uploads/1/3/4/6/134664609/pifas_wumibuv.pdfIn PDF document text
    • https://cdn.sqhk.co/xotakuzazuf/afGEjbn/28818485958.pdfIn PDF document text
    • https://dolepaxutafajur.weebly.com/uploads/1/3/0/9/130969408/3486406.pdfIn PDF document text
    • https://zomonuluxerow.weebly.com/uploads/1/3/4/8/134867862/8403824.pdfIn PDF document text
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/a3ca71.pdfIn PDF document text
    • https://fopunideneluw.weebly.com/uploads/1/3/5/9/135965314/foxiribe_rudopusigere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pedamodaw.onlinewebshop.net/what_are_the_12_steps_for_drug_addiction.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B8 5016 bytes
SHA-256: 6f84e2934679199f0e300e57419bc1438e3878103454da23eeba77b75731f7a7