Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1270b73947676f…

MALICIOUS

PDF

39.7 KB Created: 2020-08-05 07:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61f306b037dbad1e63e0f4e95e1cae4d SHA-1: 17ac24080ac6c9f02181186fe0b029f1d673200b SHA-256: 8d1270b73947676fd9e35f336404ed5df1ae2201c5f3eb41b8219d4b8c2311f0
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests the document is part of a link farm designed to obscure the ultimate malicious destination. No scripts were extracted from this sample, and the document body is heavily obfuscated, making it difficult to determine the exact lure. However, the presence of the malicious redirector is a strong indicator of malicious intent.

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=assessing+meaning+pdf
    • http://files.barrettfineartadvisory.com/uploads/1/3/0/9/130969855/5337525.pdf
    • http://files.monrealbridal.com/uploads/1/3/0/7/130776363/kaxebelo-pogubeporipe.pdf
    • http://namidik.msmorris416.ca/uploads/1/3/2/8/132815002/xaranafiwimodupoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/pufisiraxibupowakabu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/80169680018.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/understandings_of_ideologies_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2325/files/pufatuvoxonusituzolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/space_bar_counter.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/xavubofemeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/9879/1329/files/74066819134.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/93819241540.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/vomugomatinugufibewe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8829/5576/files/vefofegilonipat.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/1000_books_to_read_before_you_die_list.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d6a.bin
023c028711c31210058133ae9496f4ce593de6e3eee71c7844a0599a493f1197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6A 5220 bytes
font_01_sfnt_off00006f21.bin
701ee34dae872d095f209d8dcb7b1e3aa2a1360733beecc3be8c8e1fc4bda7ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F21 10472 bytes

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