Malicious PDF — malware analysis report

Static analysis result for SHA-256 9633ceea7aecb206…

MALICIOUS

PDF

73.7 KB Created: 2020-12-26 19:13:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: ed122585732808ecb783ecfe2279f392 SHA-1: ec3da32075cd50c61def9b66462ccfac4d4fd9d6 SHA-256: 9633ceea7aecb206fbc9d6d76e856ad97359a794a5a2d8e590338753817c6d87
214 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to redirector infrastructure. One critical heuristic identified a link to 'traffine.ru', a known malicious redirector. Another heuristic indicates a PDF link farm, with numerous external PDF links, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The ML classifier strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/aws?utm_term=laclau+mouffe+hegemony+and+socialist+strategy+pdf In PDF document text
    • https://cdn.sqhk.co/daboxazile/jhhbghK/bosigutobejixini.pdfIn PDF document text
    • https://cdn.sqhk.co/gagufatemo/RON4iR5/doomsday_vault_seed_10.pdfIn PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/1e406.pdfIn PDF document text
    • https://nadebexipopajin.weebly.com/uploads/1/3/4/6/134678264/ca1b6d3ee81.pdfIn PDF document text
    • https://cdn.sqhk.co/fokivetezabu/V8hgwjc/karukipaxatitorigeguvo.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/sikuva/sword_art_online_manga_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/86738338898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/619a51a3-c159-46ae-b32c-051778b0b408/echo_gumi_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/download_ispoofer_pogo_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/budget_stock_android_phones_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/serezumogugekerozikuk.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/nvidia_shield_android_tv_playing_games.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/fifiwiburisew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0228698f-e092-4b53-ba1c-99f3e6cb6a63/29348658847.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/tapigiperitowowobopitu.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_off0000e090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE090 5612 bytes
SHA-256: 58bf8d0c55f53a0e98b0eb685ec76be2a97635ab6494b250705427704a3d6a97
font_01_sfnt_off0000f38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38E 11220 bytes
SHA-256: 1edaf779b1aacc65b42eebe4b4116e518c5dc813962e92a8296a43e937d225d0

Open this report in the interactive analyzer, or submit your own file for analysis.