Malicious PDF — malware analysis report

Static analysis result for SHA-256 509b0e8ffdfd5722…

MALICIOUS

PDF

63.6 KB Created: 2020-11-20 21:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 563e193be6b2b7dfb5694986c84df22b SHA-1: 777050b60c35b40b15b0f87c16c2c55e483b04b6 SHA-256: 509b0e8ffdfd5722c856acd87646922886f48f582d21bfa9e63a4d8540c66991
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://cctraff.ru/123?utm_term=white+lightning+pills+ebay'. This URL is presented in a context that suggests a phishing or scam attempt, likely to deliver a second-stage payload or lead the user to a fraudulent site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/123?utm_term=white+lightning+pills+ebay In PDF document text
    • https://wejusapud.weebly.com/uploads/1/3/4/6/134614256/3727511.pdfIn PDF document text
    • https://pebiname.weebly.com/uploads/1/3/1/4/131453048/e8c5935d.pdfIn PDF document text
    • https://mivijupa.weebly.com/uploads/1/3/4/5/134578330/tamitexulibim_lasekoraxog_xewuxoburil.pdfIn PDF document text
    • https://kamubopo.weebly.com/uploads/1/3/4/6/134631829/mofaxopojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412413/normal_5f9447c826217.pdfIn PDF document text
    • https://nolaxefipox.weebly.com/uploads/1/3/4/7/134740184/gamesifofo.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/4eef7d3b-ad46-469e-8bee-e751ce15c5ee/34471210911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dda4e9d6-4034-43f7-97a2-1e2a63635505/wosisimabiwula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77325908-fec0-4027-a0b4-ecd53d0edbf8/49237229014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18d0ceb1-e0bd-4612-b5c8-0946fa15111c/bomiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9b55725-17bf-456d-8442-7a913e78b6e4/piben.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8d5e569-542a-4012-9331-13e4ae678ccb/zitogolokumikajijemitenik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb0e93b-af61-46d8-b3e6-0603c48269d8/13447159591.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_off0000bcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD2 5240 bytes
SHA-256: 21c69af30eb6c99f89ac9c9e18bac3a8cc5d3ab9ba2331c129253b08f001c07d
font_01_sfnt_off0000cebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBB 10356 bytes
SHA-256: b7126c4e33680dcb978d36f91493cb0fdcd03b410ad7ed230e1425a731f0fcc0

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