Malicious PDF — malware analysis report

Static analysis result for SHA-256 f424fa0c5efdfc69…

MALICIOUS

PDF

61.1 KB Created: 2020-12-24 13:38:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 21f57d3796afb651a33d2cc21ff54d56 SHA-1: 8f5f5327ff8a987c41bd8cfc40276a40cb88aae8 SHA-256: f424fa0c5efdfc69f032dfd0d0044ac7a455031bbbeebc0d7df386321afceb9d
252 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external resources, many of which are identified as malicious redirectors or part of link farms. The primary redirector URL, 'https://traffine.ru/aws?utm_term=autotune+ableton+free', suggests a lure related to software downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 5

  • 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.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=autotune+ableton+free In PDF document text
    • https://static.s123-cdn-static.com/uploads/4458150/normal_5fcaacab3117e.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/forunanu.pdfIn PDF document text
    • https://cdn.sqhk.co/lanasido/iifFggU/french_e_with_accent_aigu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387701/normal_5fc4b19aed3da.pdfIn PDF document text
    • https://cdn.sqhk.co/gogoturowib/IMgeFAm/44318479876.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/hfFN9FG/international_superstar_soccer_deluxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_5faf6d87b48b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_5f8ac644c8495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496391/normal_5fe38af2d6d4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_5fa7a2948adbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468536/normal_5fcf12bdf1c7d.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/sakaburepagase/red_card_game_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/lobozili.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/masarufolu.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/instagram_logo_sticker.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE273 4712 bytes
SHA-256: 05289b88e77b5f050182700edee8761a9584c6e81202797f5dd96b1f81d5fa6a

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