Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2a3c7151eef5c9…

MALICIOUS

PDF

44.2 KB Created: 2020-10-01 13:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 869ef769607c1a4e1fb1c277ee9f92da SHA-1: dc7986bb5994bb86d36cb3436ee99933f039858d SHA-256: af2a3c7151eef5c97567f636ed89707578114e170dbdbd2d45377919ff8a6826
194 Risk Score

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://ggtraff.ru/strik?keyword=telecharger+journal+el+watan+d%2527+aujourd%2527+hui+pdf In 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/37ccfe47-706a-431a-b997-20dfd9245cbb/72713030423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d82912-8c72-4863-838a-4d0e184219ad/14139615413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e2c888-2e59-48d1-8204-9a3a4e9b8240/tegademelefizerexabizijox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/mupedeziwojuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8925/5847/files/17273311677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d89bfd-60cb-4f04-8d0b-3f23e432e71e/wegaxunivedawejekus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d695b8-2b48-448e-b9c6-0fec8e1dbc56/kitanabujisikuvuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fabfa3a5-7a31-4519-9f36-96640a21992c/jifiwerumasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/clarke_raines_hearing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3424/9896/files/the_golem_and_the_jinni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/eviction_notice_letter_template_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6626/4214/files/meet_me_at_the_hotel_tik_tok_song.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5B 5392 bytes
SHA-256: c93855b81ac3f919382aa422f76fd779f9c877487eab47abacef0dc128a6d116
font_01_sfnt_off00006cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC5 9892 bytes
SHA-256: 411449e1761103e847b6d435d00ef6160bd18fd8edabaa993d69babbf80d3353
font_02_sfnt_off00008eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB7 16068 bytes
SHA-256: b09879be15c6eb2246ae7b48c1c275502bdacda3194b2e7a150da035b49823e9

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