Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3e6f77bb03136c…

MALICIOUS

PDF

82.4 KB Created: 2021-01-13 09:53:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d5f0a21d176389de938da8e70e39cee5 SHA-1: 54e307de07cd6639532931ac177f9224d8c7556f SHA-256: 6e3e6f77bb03136cb33273bafeffc3d108dcabb488f727f79b0b1a33a3086a7f
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 and ClamAV also flagged the file as malicious. Although no explicit script was extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a compromised site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=backyard+travis+scott+roblox+id In PDF document text
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5f9fe5b4e517d.pdfIn PDF document text
    • https://cdn.sqhk.co/sikibeve/hhifxgd/16254052541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410443/normal_5fb8e8cc69fba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403429/normal_5ff66814eb458.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/bqhg90S/64624538612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419633/normal_5f97eadebf25f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454559/normal_5fc54000a1cd4.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/dufekifaral/super_bomberman_snes.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/wawozadurimisesuruze.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/26803656841.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/wutamudomagijulaka.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/logokovevofunoded.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DD 5416 bytes
SHA-256: 1517ced6d88b610e96fd03c511a16cd11f4eee4b99829a4d293b3e68ede84254
font_01_sfnt_off00010369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10369 10576 bytes
SHA-256: 232783cf07cde6bbd7301c3d662e32b992089c3cb227df8a0d1fc7d28d87207d
font_02_sfnt_off000127e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E3 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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