Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3ff9709ec5b325…

MALICIOUS

PDF

57.9 KB Created: 2020-12-19 10:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7dda3fff3a8b046dd56fbb29d2d897f SHA-1: 52ec270e21524d79b483d70407b33f031a4a36cd SHA-256: ab3ff9709ec5b3252b2b5bf26c85500ca23d071742fd0cf1e8a03e0e9d4e1517
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by the PDF_URI heuristic. The ML classifier also flagged this PDF as malicious with a high probability. While no scripts were extracted, the presence of the malicious URL suggests an attempt to redirect the user to a potentially harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/strik?utm_term=6v+lantern+battery+adapter PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/488656e4-f3fa-422e-b6e4-3549b8178160/dip_gonzalez_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/amy_winehouse_-_love_is_a_losing_game_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/986934e4-2e90-4212-b0c2-9d56c082a550/vumawuvevoforiruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1a541b-a2b1-4946-b516-93675ba39b81/67508796011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b312ad01-592e-4e60-8cc8-12edece65222/82082903695.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/who_is_responsible_for_simons_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fbd98d2-1fee-46bd-a626-e19f244141ff/wuzamuvonujasakajaveket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69c40158-ac61-4f6d-9354-04e5dfa033ad/gafawatufofofumidefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d0ba1d-1903-4404-91cc-8f7222fe30c3/wow_hunter_macro_pet_attack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4213a5f-42ca-41bc-b33a-ea6b9c55c4f2/tapesh_tv_frequency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50562313-b659-4321-9683-a6ff7090ccd5/how_long_to_beat_doki_doki_universe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1403aaffbf90a66ecd5d5/t/5fcdea9f33187724c414c37c/1607330464391/63801059634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/779bc75c-d744-426b-aeea-ca03436355f3/david_schrader_disney.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe067f3570fb44d1ca0eeb/1606289023732/supplementary_and_complementary_angles_worksheet_with_answers.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_off0000aabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABC 5136 bytes
SHA-256: e172d0f7d24d4d00bdd1ab3b2aa14d38ccc4a483397c8a2e8e69a90af3d82767
font_01_sfnt_off0000bc49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC49 8992 bytes
SHA-256: c2fc37add1336c15d86ffd2359aaf76c87acaeba708486b2f81cbbdf6d4a0da9

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