Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4564c2e57c369f…

MALICIOUS

PDF

58.2 KB Created: 2021-02-19 18:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b980f3f7bbaf30dd4319597d66b4904f SHA-1: f592dc09731b2550230fdea42d2e22baa432cdc7 SHA-256: 0e4564c2e57c369f57c4afb839734db797dbf5c9f67c80dc674b528efa6a9d6b
242 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which are hosted on disposable domains or known malicious redirectors. The heuristic firings indicate it's part of a link farm designed to distribute malicious content, likely for phishing or to download further malware. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8835

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=brother+hl-2270dw+printer+driver+mac In PDF document text
    • https://bexajaruxomape.weebly.com/uploads/1/3/1/3/131384789/davatu_gugoreroj_zitaz.pdfIn PDF document text
    • https://murovufusefafa.weebly.com/uploads/1/3/5/3/135331463/6777223.pdfIn PDF document text
    • https://jesidovelagira.weebly.com/uploads/1/3/4/7/134705211/rilemomedunodi_wakikikijil_befokase.pdfIn PDF document text
    • https://senajadodum.weebly.com/uploads/1/3/1/3/131379015/6737969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500670/normal_5fd09f85df2ca.pdfIn PDF document text
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/vobituwe_divusarexaluta.pdfIn PDF document text
    • https://ginamelemu.weebly.com/uploads/1/3/4/6/134624442/16c7d7397ee.pdfIn PDF document text
    • https://furadigiwib.weebly.com/uploads/1/3/1/4/131407367/1296704.pdfIn PDF document text
    • https://fubomagasikeka.weebly.com/uploads/1/3/4/4/134474343/6742376.pdfIn PDF document text
    • https://pupowoxixibigi.weebly.com/uploads/1/3/1/4/131438439/lalage.pdfIn PDF document text
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/sukovotimajuw.pdfIn PDF document text
    • https://rebusisi.weebly.com/uploads/1/3/4/0/134017700/5a5d41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gibeter.rf.gd/13972590230.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/13662912864.pdfIn PDF document text
    • http://febiked.rf.gd/malware_analysis_report_ar18-_221a.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/71217832253.pdfIn PDF document text
    • http://wexugemo.epizy.com/robotics_and_artificial_intelligence.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_off0000d9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9ED 5724 bytes
SHA-256: eabfccdc6ba0914f95bdc0b35dcb5a41e3b69ea116c4a5ebb76e8fe59172cb18

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