Malicious PDF — malware analysis report

Static analysis result for SHA-256 474ab9ca84788374…

MALICIOUS

PDF

46.2 KB Created: 2020-08-06 05:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0c1e55abf5f40a90df33eddc1c297d0 SHA-1: da7972a00d337308de3e8c8035780cff9379f547 SHA-256: 474ab9ca847883741034a816b3f6649b129ac290e55613a8691a935b6e448a09
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and other Shopify links, suggesting a lure for free downloads. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be a malicious redirector disguised as a document download.

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.com/pify?keyword=calligraphy+lessons+pdf+free+download In PDF document text
    • http://files.riverosphotography.com/uploads/1/3/1/6/131637021/ef22c4a49.pdfIn PDF document text
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdfIn PDF document text
    • http://faminan.whitewillowcollective.com/uploads/1/3/1/3/131379732/3095746.pdfIn PDF document text
    • http://files.tammykjohnson.com/uploads/1/3/0/8/130814057/5523693.pdfIn PDF document text
    • http://files.magrathconsulting.com/uploads/1/3/1/3/131380158/nefoner_xakozumewod_tizomabagibafe_fopemu.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/1/0438/5318/5174/files/author_s_craft_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/facebook_cash_machine_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/rudipemenatogeditit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/rapprochement_bancaire_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/introduction_to_analysis_wade_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/togamobavugizirefaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/laxesurefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/ziruled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/miridekasarimasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/23008642289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8554/5124/files/vadafepozanobuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/98100493462.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5969 5404 bytes
SHA-256: 5c504850acd051206bbab81625a7ee62f8b49c9bac00243343f4f0b013e36bce
font_01_sfnt_off00006bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD0 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000745c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 9748 bytes
SHA-256: 033e850435bc9d91d3bbb0a87fa7fe0989612c567a47bb5b87daf15e90716227
font_03_sfnt_off000095fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FC 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848