Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10d44c66ea97392…

MALICIOUS

PDF

61.1 KB Created: 2021-01-09 19:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8a28f495d0ebfb549fdb274635aa8f05 SHA-1: 0bb788b351c07bea55ddbb28e9332ca448434507 SHA-256: d10d44c66ea97392239ce2410755f82fc6b6407c3727a2ccde236583e2175994
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing and link farm attack. It contains numerous external links, including a redirector URL, likely intended to lead users to malicious content or phishing sites. The PDF's structure and embedded links suggest an attempt to disguise malicious activity as legitimate downloads or resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7544

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?utm_term=android+busybox+smart+install PDF link annotation
    • https://site-1174993.mozfiles.com/files/1174993/moto_rider_3d_java_game.pdfIn PDF document text
    • https://site-1175310.mozfiles.com/files/1175310/line_connection_tucker.pdfIn PDF document text
    • https://peguduzivinaw.weebly.com/uploads/1/3/1/6/131606374/6227708.pdfIn PDF document text
    • https://site-1179441.mozfiles.com/files/1179441/cross_stitch_kingdom_hearts.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/bexolamabad/skyrim_enb_settings_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/foxit_reader_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/24382868441.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/jumiluvijaw.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/sotojerarozomerukixide.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/loan_application_form_in_word_format.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_off0000d6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E2 5268 bytes
SHA-256: 56139f6c66c54c4403ca7dc9427df37a3d9f642f382c6e177c7c43ed3b2f0c9f

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