Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7d6cc4d81351db…

MALICIOUS

PDF

66.8 KB Created: 2020-11-19 07:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 6c7413d6fe1608d613a8573c0c89b9f0 SHA-1: 7fd8948081d63728b44696865614102880cfdd4b SHA-256: 6d7d6cc4d81351db656158a36bd72a35ef97be0df5e545f3178f6887cfcc7f63
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is associated with malware distribution. The document body, though heavily obfuscated, contains text related to 'Adobe CS6 Master Collection serial number', suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

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/strik?utm_term=adobe+cs6+master+collection+serial+number+mac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489045/normal_5fad552464805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418796/normal_5f95a89dda7e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_5fb442fa9b59f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5fa7e7b5b9be1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5f87d4d03f779.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/b167c1d4-1d3a-4946-8281-ba2aa8d93ded/carrier_infinity_system_control_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16034b86-05fc-4fa0-85a7-8f3cd940cc1e/muniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e42327-148e-4f53-b536-9a03b0b535cb/gapamabilara.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/23385519404.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/mobilespec_bluetooth_fm_transmitter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b990cb8-01a0-4984-a6d0-3319b1fee3b3/62866333347.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_off0000c914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC914 5368 bytes
SHA-256: 25e423277a5709493436559224c0e9e798734bc68ae3320d7b982b80d21ad5b4
font_01_sfnt_off0000db39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB39 10340 bytes
SHA-256: 69b228bc991d33a6b2bde605596230b05ae389e3facc05fcd855abdb76be79d0