Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0428d63e2517db4…

MALICIOUS

PDF

66.7 KB Created: 2020-12-07 08:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70136a7d106ff8548453bb6d9e3f6053 SHA-1: d1065e7c31e27a567904e4f3c524c99066b4459d SHA-256: b0428d63e2517db4434d43bb997c6e6b269b98aa5a04508344f51c0de074fd1d
262 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service designed for SEO manipulation and phishing. The primary redirector URL is 'https://traffking.ru/123?utm_term=watch+john+wick+3+online+stream', which is also flagged by heuristics as a malicious redirector. The document body, though heavily obfuscated, contains text related to streaming, likely a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffking.ru/123?utm_term=watch+john+wick+3+online+stream In PDF document text
    • https://refaxezadale.weebly.com/uploads/1/3/4/3/134325555/5601d52b.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/bokofapig/capital_high_school_olympia_basketball.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32c35338-ca5a-4159-bc63-5af638091210/how_to_get_free_rp_from_riot.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/multiplying_complex_numbers_practice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4999e26-140c-4aa8-87d6-eabb1fbc7add/nerizevekawafa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc37f170b6b03258f45d436/t/5fcdc463662d5e24e0c2a1c6/1607320676146/best_sound_effects_for_youtube_video_downloads.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88424199-341f-4543-9c11-f4861e31cce4/49822777897.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe03e1e18c5c478ec26d37/1606288360182/lee_county_schools_vaping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a75581-6abd-4b2e-8487-464d53d2c694/7498010737.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/abrahaminte_santhathikal_song.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_off0000c70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70A 5448 bytes
SHA-256: 716746baa36c0cc17b54ed3cf8b4e441478bf01cba7f53fe79cb1c35abc76127
font_01_sfnt_off0000d984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD984 10772 bytes
SHA-256: 49073975c2b3acbabe3ebce88b4cbd9d1505d0b9ae65212e88af17aca0b4d5ab

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