Malicious PDF — malware analysis report

Static analysis result for SHA-256 75870a58662f9703…

MALICIOUS

PDF

42.3 KB Created: 2020-08-31 22:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 209ec2b4312c9b0eb84a69aba139fa3d SHA-1: d4b9a5cbb58f37f25a19e93ba24626f9e993e87f SHA-256: 75870a58662f97032fec6fb5b778c32eaebd5cfd70faf9c190a7b1e0be7731e2
154 Risk Score

Malware Insights

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

This PDF document contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and other links that appear to be part of a SEO link farm strategy. The primary malicious URL is https://ttraff.ru/pify?keyword=anthem+game+pc++free, which is flagged as a known malicious redirector.

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=anthem+game+pc++free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/98644402272.pdf
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/31596309370.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/wagos.pdf
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/greenhouse_gases_and_global_warming.pdf
    • https://cdn.shopify.com/s/files/1/0437/5101/4551/files/lunazepiguruxuxunufoz.pdf
    • https://static.usrfiles.com/ugd/b8c837_3507dff1976a4b68a9b45fcd62197185.pdf
    • https://static.usrfiles.com/ugd/b8c837_123d252e4ac64234a60ca242ca54936e.pdf
    • https://static.usrfiles.com/ugd/6cf392_5b789d9ed3834f869e0e391a9e48aca9.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/gajesitupixunuribiloj.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/77644848270.pdf
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/nizerododinifav.pdf
    • https://cdn.shopify.com/s/files/1/0463/4741/9809/files/sales_director_job_description_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/category_manager_job_description.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_off000065c5.bin
beb8b71b97d8462120c5057fc6d07f2f3ea727a2eafc367810a6334074e23a32
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 5208 bytes
font_01_sfnt_off0000775e.bin
e79aeb5e8e0e5fe72ad4e6c352b89e367d1161f113b615ef4dd3e3bfdbae73cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 11180 bytes