Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8461468e71fb5c…

MALICIOUS

PDF

56.4 KB Created: 2020-10-30 23:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: c69cab32691cc925bf5a7adc4b4774aa SHA-1: 416f69c65c05acb345612f72b1c473a7a5ab8dfe SHA-256: aa8461468e71fb5c6d1f8fcbde61016c45dc0d008e018c284e3bcf3e604b8d3b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/wb?keyword=amenorrhea%20primary%20pdf In PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/9961a82d71f.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/a98c9cfca0e2.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/c84743950.pdfIn PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/c6ff656e28f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2762/7676/files/44773082505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a804c8-11b2-4fbb-a201-cf55cd25998e/80966357130.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/mobile_games_addiction_research_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a7590b-d402-4d9a-abed-8aaa55ceea0f/sugomarutopolezomeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0739/1920/files/68795950225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0379/6413/files/whatever_you_are_be_a_good_one_who_said_it.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/morefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0391/8512/files/90095105699.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000909b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909B 4868 bytes
SHA-256: 79bfff515306ec6c3d8bddd727e4253923418b3d5126d3c68a1c1399fd81cd1f
font_01_sfnt_off0000a0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F0 11116 bytes
SHA-256: a35fc1ff7f160ba273afcefe77487794506d39b3f49b3eb8213950e1e34f4616
font_02_sfnt_off0000c6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D8 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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