Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d183432bfdf246…

MALICIOUS

PDF

58.5 KB Created: 2020-08-21 23:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 430019be5860bea3a559bd415126fda7 SHA-1: 411aea8b1bd020f2f099625f057645d3557ebc72 SHA-256: 27d183432bfdf24673c8136e65f8a4994dcda2aaf29b58ddbcd5d7e023a80afd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=video+bts+idol+dance+practice+mirrored, which is likely used to obscure the final destination of the attack. The document body itself is heavily obfuscated and contains numerous other links, many hosted on Shopify, which are likely part of a link farm to improve search engine ranking for malicious content. The overall pattern suggests a phishing or scam attempt leveraging a link farm and redirector.

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=video+bts+idol+dance+practice+mirrored
    • http://files.jryderpsychnp.com/uploads/1/3/2/6/132681579/2914167.pdf
    • http://files.dogamelbourne.com/uploads/1/3/1/4/131437394/bfe8920.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/ehome_infrared_reciever.pdf
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/nomefele.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/zuluvab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/2436872507.pdf
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/44816184408.pdf
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/real_audiencia_de_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/rozarofizujebof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/kekejitafojijisane.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/california_association_of_realtors_rental_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/69633046218.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4325/files/56914507118.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/sql_developer_resume.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b66.bin
51ab6905290750564d90708e7631dedb146f5386d6918388d3b3373a2b20f6d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 6476 bytes
font_01_sfnt_off00006b3b.bin
ae7ab6467557bca39920c774c9bde997e4bb3bfec86f3e8aef922a464a6c8511
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3B 7528 bytes
font_02_sfnt_off000083bb.bin
ceff5336e5800ff3b2f42a4e90aefc491ec4cd27d93774c514bb5e0d8fcde07a
pdf-font-stream PDF embedded font (sfnt) at offset 0x83BB 5324 bytes
font_03_sfnt_off000095b3.bin
fc36ac049a5941c184910b7ba74eafd5c40e974cda286b8fc6cadb6fb1751cb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x95B3 13912 bytes
font_04_sfnt_off0000c242.bin
a6a6479f5d9089d5da6a93b1492593ee14966874d602a05f573301f2d6c4b334
pdf-font-stream PDF embedded font (sfnt) at offset 0xC242 16860 bytes