Malicious PDF — malware analysis report

Static analysis result for SHA-256 950b294db9b8fd5c…

MALICIOUS

PDF

68.7 KB Created: 2020-08-19 04:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d61c3090cc3fc55fa14079f90fd1951 SHA-1: f53d5517ce647fa0f50d7f12d73230b244d5dd8d SHA-256: 950b294db9b8fd5c4b3d82068c77f688fe963dd12c914892f08e9e405206cc59
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or redirecting users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a phishing or malware download page. The document body, though heavily obfuscated, contains references to SQL date formatting and URLs, reinforcing the lure. The presence of many external PDF links suggests a link farm strategy to improve search engine ranking for malicious content.

Heuristics 3

  • 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.
  • 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=sql+convert+datetime+format+mm%252F+dd%252F+yyyy
    • http://files.shannonyseult.com/uploads/1/3/1/0/131071067/kuwaxapoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/xukezobaxax.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/rpg_maker_mv_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/fupibawanemaxogagutogade.pdf
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/bijofu.pdf
    • https://cdn.shopify.com/s/files/1/0452/4271/2221/files/empirical_and_molecular_formula_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/how_to_write_a_book_review_essay.pdf
    • https://cdn.shopify.com/s/files/1/0438/8634/6408/files/63196240986.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/xifopoxigujibunaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/wild_n_out_episodes_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/how_to_get_more_emotes_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/10663101389.pdf
    • https://cdn.shopify.com/s/files/1/0450/0871/5940/files/agneepath_songs_deva_shree_ganesha_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0430/9935/7338/files/attributive_clause_exercises.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_off0000a72f.bin
e8b422dabe674642c9fb80bc5202dc18195e4c99a252265a2980c5d49254829f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA72F 5416 bytes
font_01_sfnt_off0000b98f.bin
5e6978d7ed7be320911d971279aecb4d9215260407c7e421602c5fb8a6b81790
pdf-font-stream PDF embedded font (sfnt) at offset 0xB98F 17592 bytes
font_02_sfnt_off0000ef03.bin
6f671ad759a9231fce08c1f912dee0e909248a55e38a8b7a8cd4df1c5351a16c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF03 16512 bytes