Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd293fe72b1030dc…

MALICIOUS

PDF

61.1 KB Created: 2021-01-10 17:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ad3fd0ec95f149a43c70f9b9a1e7d0d1 SHA-1: 5ffdef7e6e10b411180ddddc25194c1e66340155 SHA-256: dd293fe72b1030dc79185c0e7597c4b8ba0c71debdd115d5928188196b622c52
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a redirector link and a high-confidence ML classification. The document body, though heavily obfuscated, contains references to 'Dbrau m. a date sheet 2019' and metadata indicating it was generated by wkhtmltopdf, suggesting a potential lure. The presence of numerous embedded URLs, including one pointing to known malicious redirector infrastructure, strongly indicates an attempt to lead the user to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9420

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/aws?utm_term=dbrau+m.+a+date+sheet+2019 In PDF document text
    • https://site-1187178.mozfiles.com/files/1187178/centipede_venom_dogs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393626/normal_5f9cfe363079b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_5fa2dc7dd783c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366010/normal_5fc99ad883f70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405660/normal_5fa03c3cae5df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5f9bd3f28e331.pdfIn PDF document text
    • https://site-1172874.mozfiles.com/files/1172874/27605097726.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/vuwosudefilef.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/4ghm5jI/storybeat_premium_apk_no_watermark.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_5f98f6fc6fd51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465701/normal_5fdbe4149322d.pdfIn PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/639409.pdfIn PDF document text
    • https://site-1173855.mozfiles.com/files/1173855/mysejahtera_check_in_family.pdfIn PDF document text
    • https://cdn.sqhk.co/babonisu/jfigU2A/dvd_player_netflix_ready.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375203/normal_5ff40a9f8f811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1D 2868 bytes
SHA-256: ef0ff104ea44b4f76f2e317c05d944ff73adab4e11d451763276b796cfc564ed
font_01_sfnt_off0000d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74F 5688 bytes
SHA-256: 35639eee76e7ca4810b3c292107b233850a11925cefe72018b873f21488e02c4

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