Malicious PDF — malware analysis report

Static analysis result for SHA-256 755166ccfd1e64e2…

MALICIOUS

PDF

40.7 KB Created: 2020-08-28 14:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f195d311639796d1cce58e06f1c63493 SHA-1: 25df66a82c6b4f2a4a7ae847716cef25c325f1aa SHA-256: 755166ccfd1e64e2605da6b302c2df6309fd2d32a6584d10269cdd0be765610e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=dragon+nikana+build', which is also present in the document body. This suggests a phishing or malware distribution campaign leveraging a link farm to obscure the final malicious destination.

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=dragon+nikana+build In PDF document text
    • http://fogirizax.mitchadvent.com/uploads/1/3/1/6/131637046/tajujisokifa_gojedomobeke.pdfIn PDF document text
    • http://files.culinaryvacationsinc.com/uploads/1/3/2/7/132740467/gevadi.pdfIn PDF document text
    • http://files.shelter-share.org/uploads/1/3/1/3/131383283/fc628b1b798.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/1/0430/3103/6053/files/tic_tac_toe_code_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/magofatedokapoken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3582/8124/files/foletakegusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/434366598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1064/4377/files/dugowakupigagerofutoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/83362434717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/would_you_please_answer_the_following_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/tameb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1135/6318/files/46935164060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/xalijin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6839/1577/files/cognos_tutorial_for_beginners.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_off00004355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4355 5016 bytes
SHA-256: 38709a657d09c83d665b36884c83f43717ab1a0c4e700dddc9b9edccc3d1b07c
font_01_sfnt_off0000546a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546A 1988 bytes
SHA-256: 1fb5601249e9f24b79c1525dc6e0fd0057c29f9b50fbc74dccf5d325ed008def
font_02_sfnt_off00005dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD6 10096 bytes
SHA-256: 417635a7218992a7383c5988ccc48768b54aa9d0759196d57bf440ab291a5714
font_03_sfnt_off00008072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8072 16108 bytes
SHA-256: 53121803cd1d13b4da54a9096520bf0c12ca821c8a17e323157945f8e58bee23