Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb84b9681ea7108f…

MALICIOUS

PDF

35.6 KB Created: 2020-08-03 21:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5eb5fb53121b2532f36f02cfc1912d52 SHA-1: 4836a6c639291ae84afea8a00a67980630b28e05 SHA-256: eb84b9681ea7108f9a7925bfc921c8133c2f9eaf1c6cad1a57a888cecc0c5e6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which are SEO-optimized to appear as legitimate book downloads. The primary link, 'https://ttraff.ru/pify?keyword=pernkopf+topographic+anatomy+of+man+pdf+free+download', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links under the guise of providing free content, likely leading to further malware or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.ru/pify?keyword=pernkopf+topographic+anatomy+of+man+pdf+free+download In PDF document text
    • http://jujup.woofgangkennels.com/uploads/1/3/2/6/132682090/piferipo-folekapazu-jowiwaxiledo-linuguvasi.pdfIn PDF document text
    • http://files.destinationweddingsbigisland.com/uploads/1/3/0/7/130738681/24680089f761.pdfIn PDF document text
    • http://files.bizcontrol.net/uploads/1/3/1/3/131380626/jenovop-xakosuz.pdfIn PDF document text
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/4405716031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/danidafamomumawaliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/togifixukofajofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/76324549119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/18179785091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/shelby_county_license_office.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/godazufawaxebov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/50266217914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2069/8268/files/43567991357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/nefomekexikorowurepep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/tumewimave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/23581612343.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4B 5648 bytes
SHA-256: 6e95283b3997940db582c34875a89cf4b9876e9c6aee8b30e0b7eda6a34bf940
font_01_sfnt_off00005e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7C 10100 bytes
SHA-256: 108cd1d0e2f55a992ec8c1cba3ff05c180d3ed142d4110f832b84ab2b1eb6254

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