Malicious PDF — malware analysis report

Static analysis result for SHA-256 445de3692432abcf…

MALICIOUS

PDF

67.8 KB Created: 2020-12-19 01:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 7eb5acec620efaf42998390e5e1f27b9 SHA-1: 6a11465d9d82abdc988f57b077382ea1761f7942 SHA-256: 445de3692432abcfbdc17b296430fcd24b0346e48d744e8e05bb981db9a28b9d
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic firing suggests the document is designed to lure users to a phishing site, specifically advertised as a download for 'cave story psp download'. The external URI points to a suspicious domain, traffnew.ru, which is likely involved in distributing further malware or conducting phishing activities.

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
  • 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
  • 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://traffnew.ru/123?utm_term=cave+story+psp+download PDF link annotation
    • https://gosaronazaniga.weebly.com/uploads/1/3/4/8/134851605/kulagi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490516/normal_5fb8b8ca764c8.pdfIn PDF document text
    • https://xipowabiwakazo.weebly.com/uploads/1/3/4/6/134614187/610230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5fc56ca02838f.pdfIn PDF document text
    • https://rizafoxuz.weebly.com/uploads/1/3/4/8/134852064/fakeposajeku-guzedezejiv-faturoxin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3c007ae-60ca-441f-8ece-4197b49daf6b/4197885547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33cd38f-b0e7-4ab5-9b02-2db87a0995bd/sugazogad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf50d1b-8ddd-4743-b852-35e8f496ce52/94913727566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1186f1f7-f138-479c-999a-74122b458838/sopexexobiperila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a0523df-a178-4d12-a546-9ac120959ff3/64260132599.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/how_to_mute_someone_in_discord_on_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd93fe2f-3b4d-4212-ad55-f203696f8439/rizizigifowanuxivama.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_off0000ca20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA20 5112 bytes
SHA-256: 14b5b74058c4e413151ab8528aa004b0a6e4297a676e318fac37b2cc4c795b04
font_01_sfnt_off0000dba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA7 11940 bytes
SHA-256: 1a9edf6f5e059e96a228b626eebafe4e34cfbc79aa998634b30c654074741487

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