Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1f085ad0bfca41…

MALICIOUS

PDF

41.8 KB Created: 2020-08-22 16:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0534e6b6066185059099b017e66b5ae1 SHA-1: afce43fc15258267cad240f991464e98f958c0c6 SHA-256: 6c1f085ad0bfca414b6c98178070d9bab8023e257b9407728492f4952780433a
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=jio+mobile+in+play+store++video'. The document also exhibits characteristics of an SEO link farm, suggesting an attempt to distribute a large number of potentially malicious or phishing links under the guise of free downloads. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed for malicious redirection or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=jio+mobile+in+play+store++video In PDF document text
    • http://files.christchurchdayschoolmtp.org/uploads/1/3/1/4/131438819/mubebepisadarefol.pdfIn PDF document text
    • http://sojod.twyfi.org/uploads/1/3/0/9/130969772/sexat.pdfIn PDF document text
    • http://files.regulatorycheckbook.org/uploads/1/3/1/4/131453536/fikunugutumowi_fenazaxuwanezuj.pdfIn PDF document text
    • http://tajobapas.solcreative.co.nz/uploads/1/3/1/4/131453194/8675501.pdfIn PDF document text
    • http://files.theatreodyssey.com/uploads/1/3/0/7/130776110/pikeboji.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/1/0429/0894/2492/files/a_level_physics_roger_muncaster_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/catholic_apologetics_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/pivemeromituladozijom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4907/3312/files/bagpipe_sheet_music_amazing_grace_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/66016557049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/48368254070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/bogetiwekopuvop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/alto_adige_quotidiano_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/integer_to_string_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/45923118791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8761/6413/files/8th_grade_spelling_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0078/9154/files/delaware_driver_s_manual.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_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 5396 bytes
SHA-256: 24ff7cf4d54c61e5e777e9cf546ce26079433d302d9b418013150512b9fd8833
font_01_sfnt_off00007593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7593 10744 bytes
SHA-256: f49c2002d9d8e190926a2f1b9dfd7891b7c0a72c975041030e1928ba30cb2e2a