Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb5a2d7d4c08155…

MALICIOUS

PDF

45.3 KB Created: 2020-08-28 01:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de5416f404aba37ff85d530b2af4ffd8 SHA-1: e4275272663e498bea93005fb47a3c34465d3368 SHA-256: 4bb5a2d7d4c081550c41dcac51d8d509a65fea9dfcfac7dd4bc5780403f61f66
152 Risk Score

Malware Insights

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

The PDF contains a link disguised as content related to the 'Gucci mane woptober full album'. This link, 'https://ttraff.ru/pify?keyword=gucci+mane+woptober+full+album', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The primary intent appears to be redirecting users to malicious infrastructure through a deceptive lure.

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.ru/pify?keyword=gucci+mane+woptober+full+album
    • http://kiwiti.globalmusicsong.com/uploads/1/3/2/3/132302720/105165.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/kajenogakogobapuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/17233976072.pdf
    • https://cdn.shopify.com/s/files/1/0463/1547/1013/files/35425071541.pdf
    • https://cdn.shopify.com/s/files/1/0436/9216/3227/files/suxuvejixob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7505/files/ambidextrous_organisation.pdf
    • https://cdn.shopify.com/s/files/1/0463/0439/5426/files/wugirowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/59121310244.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/24980436077.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/latest_horror_movies_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/9192/6948/files/xenanifujozunisikofufodab.pdf
    • https://cdn.shopify.com/s/files/1/0433/9544/8988/files/ecological_footprint_activity.pdf
    • https://cdn.shopify.com/s/files/1/0458/5426/1401/files/chebyshev_s_theorem_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/51303267023.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e6f.bin
eed717095f0209909ef12e6f7e0ae77d303e5d56360ee4e562e373aa7d93175f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6F 5244 bytes
font_01_sfnt_off0000703e.bin
cc0a45fc85ae9aaa5b847152219b32c250b186597ec1c62682cd9bd0af0e4132
pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 10232 bytes
font_02_sfnt_off0000937c.bin
5bd88bd5c44eb894b151ed33ba27cda91e6b534aa93a3b288c9f525c64baf622
pdf-font-stream PDF embedded font (sfnt) at offset 0x937C 16060 bytes