Malicious PDF — malware analysis report

Static analysis result for SHA-256 413148a4b02e1d5a…

MALICIOUS

PDF

63.6 KB Created: 2020-08-21 10:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 760332393a89b512750dffaafee7f7fb SHA-1: 864d77cdbcbeeec11ddb244512c105d879b72da3 SHA-256: 413148a4b02e1d5a511d9d2a56dc688178e11b7da80ba2ac8ee6540d2770a2a3
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs, indicating a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=collagen+synthesis+pathway+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing information.

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.ru/pify?keyword=collagen+synthesis+pathway+pdf In PDF document text
    • http://gajefob.homesinnorthwestarkansas.com/uploads/1/3/1/6/131636725/sesaduralezibaludixe.pdfIn PDF document text
    • http://files.gospaslavender.com/uploads/1/3/1/6/131636655/6343634.pdfIn PDF document text
    • http://konufuvo.pbc-alliance.com/uploads/1/3/0/7/130739206/8773034.pdfIn PDF document text
    • http://wusalab.spikejamesandthenames.com/uploads/1/3/1/4/131454762/xubevekuximotew.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/1/0432/6470/4662/files/56615947559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/rules_of_chess_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/blagues_droles_courtes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/loliramipufuxipike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/94994672169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/30188149976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/mogekolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/57038862082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/assembler_avec_foxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7298/6015/files/wexobejadunirazovefupewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2744/6435/files/little_alchemy_horse.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_off0000a6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A8 5304 bytes
SHA-256: eda7ce86d35e44d1ed17b57ec344c657267c93ec004bccdfbd7b81dffcabc448
font_01_sfnt_off0000b8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CD 10208 bytes
SHA-256: e1dd3e677eb65f15db2db899cda014ed9b9f1603188e8c50db06b48e27b2e81b
font_02_sfnt_off0000dbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD9 16148 bytes
SHA-256: 49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648