Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11b442ff56f2324…

MALICIOUS

PDF

68.1 KB Created: 2020-12-19 08:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 00bb6cfdeb02214a44f31f7b75949b6e SHA-1: c1261d5568daeb45a8d51d622e3f89c3ddb2166f SHA-256: e11b442ff56f2324ea4d834628af223ebfd9aac2270ab58bbb29f7fa075b908f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ggtraff.ru'. ML classification also strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

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://ggtraff.ru/123?utm_term=cyberpunk+cyborg+art In PDF document text
    • https://static.s123-cdn-static.com/uploads/4462035/normal_5fc906a0ee656.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369632/normal_5fc7e36ae9b37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462037/normal_5fa6e81ca59d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461791/normal_5fcf7d9c08868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5fa2efda6136d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f873e14a9055.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/friendship_images_for_whatsapp_dp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bbbd568-8077-4426-92ca-b2dddd40087f/tekomibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83ca58ab-f8ee-4609-8c5d-a2633d2fe112/urban_game_industrial_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/91512354246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e34ade03-1646-48d5-9c1d-7f6ca87e1f3a/rheem_rgph_gas_furnace_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c1a486-7ee5-4d08-a57d-01dcbbd5fb93/gitakozedosoj.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_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 5100 bytes
SHA-256: a5b9eaa7e920641a836bb3ba08c9666025ef2a26ced371322ddda008c120942f
font_01_sfnt_off0000df78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF78 10776 bytes
SHA-256: 17ae60dddb4a3241cc19f30139dab10adf80b5db67400d1f56ef9aa9d5d7ec48

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