Malicious PDF — malware analysis report

Static analysis result for SHA-256 023476de1984740b…

MALICIOUS

PDF

62.4 KB Created: 2020-12-16 14:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0cf72f6d71c67af332e3c461394b2779 SHA-1: 10dca4a04f0c3ae57eb912ccdaf4e39b56f35827 SHA-256: 023476de1984740ba50be1382036bb8a885f9dff0e0a03bd3363206eb55dd4c7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/123?utm_term=ffxiv+how+to+get+dreadwyrm+gear'. This URL is likely used to lure users into a phishing or malware download site. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://traffking.ru/123?utm_term=ffxiv+how+to+get+dreadwyrm+gear In PDF document text
    • https://static.s123-cdn-static.com/uploads/4413693/normal_5fc7ee510bfa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495551/normal_5fad843b24005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5fb2f26869f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5fa345ea27d1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8ca846-4662-40ea-a995-0dbcd1eaa348/70636966066.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/belling_gas_oven_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc7f29a-0955-4073-b617-a5115b76f5c8/14254720917.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/clash_of_clans_pc_koplayer.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/bajaj_finserv_emi_store_app.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/long_days_journey_into_night_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a3430b-c875-4738-b8ea-43fd4ffc97ea/88122419730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a80c17b-057b-41c4-85f0-d1d4ffc736f3/58569250226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d58338f9-6116-41cf-8a66-a0e42a4d6c79/41379581061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a506991-b19a-4661-a3b4-f4d9fb9d4c12/tadasepojuvofasemido.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_off0000b62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB62C 5388 bytes
SHA-256: 6e61201d68549c5736f95f3c83952477616226517263216638ba450cb8d8c4d9
font_01_sfnt_off0000c880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC880 11048 bytes
SHA-256: dc2467f55869da14cfbe3410dd747624e4e1be590a1b9bf5146a4762c2bfdc39

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