Malicious PDF — malware analysis report

Static analysis result for SHA-256 0acd7e1959262f99…

MALICIOUS

PDF

37.5 KB Created: 2020-08-27 23:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ed50f24ff7003de310d0201528e98e SHA-1: ad327b953d2608c47779bdb3b802a938381d8c4b SHA-256: 0acd7e1959262f997b820617bc94017e99249e493001f97d68b32908b7ddf96c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious payload or phishing page. The document body and embedded URLs suggest a lure related to torrent downloads, a common tactic for distributing malware. The presence of multiple external PDF links, some pointing to benign Shopify domains and others to unknown or malicious domains, indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=touchdown+2+cause+hell+torrent
    • http://files.prosenation.org/uploads/1/3/0/7/130776478/dogagexizekis_lipokiwasexaw_lafosizej_vasodarafux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/42187823113.pdf
    • https://cdn.shopify.com/s/files/1/0435/6407/3128/files/pemex_business_plan_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/gene_therapy_for_inherited_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/65916656486.pdf
    • https://cdn.shopify.com/s/files/1/0462/6428/7381/files/free_printable_math_worksheets_7th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/adding_text_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/bidot.pdf
    • https://cdn.shopify.com/s/files/1/0437/9512/0289/files/free_chess_books_online.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054a1.bin
94bf0f1c4ba0ec25e6cc78593a3db5fa4962570b82524dca551c3068ac32b5da
pdf-font-stream PDF embedded font (sfnt) at offset 0x54A1 5200 bytes
font_01_sfnt_off00006654.bin
5cfed0a32165d774aa8aee41914835aff90692ac08e77eb8315bc1fe5bf539f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 10148 bytes