Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6741967bf272b5b…

MALICIOUS

PDF

74.0 KB Created: 2021-01-12 15:10:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aba83f0993eb3df07ef8df900cd12420 SHA-1: 6ef5b8785720b29100181b81d6edf4b6cfc2dd52 SHA-256: a6741967bf272b5bad99735610aa5d20e7a7aa5082cfe19654b5da8e9b08abd7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggtraff.ru, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to redirect the user to a harmful site, likely for credential harvesting 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/aws?utm_term=enter+coordinates+into+google+maps+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f923a35b86bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491965/normal_5fde018e4e3bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412164/normal_5ffa5183d4683.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/ghdjbif/vutaxir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485801/normal_5fc16b5f196fe.pdfIn PDF document text
    • https://cdn.sqhk.co/muvasesuru/WPhaigF/game_center_download_for_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417309/normal_5ff39da168c2a.pdfIn PDF document text
    • https://site-1222023.mozfiles.com/files/1222023/decision_tree_template_google_sheets.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/kagedatabujo/debuxefetoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/nijokozukeboxuted.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/fekid.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/ziriveziponexaku.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/80321303324.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/video_games_history.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_off0000e65c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65C 5348 bytes
SHA-256: 705f4f93bc7ea7301ced6eb4d3c67403f26c3bb4ac6ba0d46ddaa713c6503411
font_01_sfnt_off0000f876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF876 10200 bytes
SHA-256: bf97d46bdf5face836e253f022bfab187b20c0b07b02310b26008dd053c37d55

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