Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c41edf2d83c5e6…

MALICIOUS

PDF

34.3 KB Created: 2020-11-05 20:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2efc8c26a468423a062dbaeb0be4beb1 SHA-1: 5cd717c1c12b6383b1498979958a5c7bc4517ef2 SHA-256: 63c41edf2d83c5e6d74fb1b38fa75714da97b3d7a67b78f890879f858bbfdfbf
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains an embedded URL that redirects to a suspicious domain. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates this is likely a phishing lure for free downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/123?keyword=forest+ave+church PDF link annotation
    • https://guwopatuzigumi.weebly.com/uploads/1/3/4/3/134334434/6148b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417818/normal_5fa41be7b84cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5f97dae37adfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8f1924c8ee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_5f90bbaf24e2b.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/fasanag/bise_fsd_9th_result_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/xixat.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/junie_b._jones_is_not_a_crook_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cee41e1-3775-4f92-a7c7-e4786a13a3fb/97345214442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/403a8c75-be5b-49d9-b145-053eefeb8f1e/australian_timber_oil_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/27657177082.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/63497256610.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_off000049af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AF 4872 bytes
SHA-256: 2c5259897d1cd5fa22f6da67ec565864a7e93adc2854797bf40c3bcf74aa9be0
font_01_sfnt_off00005a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A42 10032 bytes
SHA-256: 5163cafff987a62dc5940d57b8766f74c12a9ecdfaa9b9f8f2deccb23a9f310f

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