Malicious PDF — malware analysis report

Static analysis result for SHA-256 b227b829cbdc448e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-11 14:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31bc70f91f4f618b1d16dcce6c92dd91 SHA-1: fba0ec469f748445c27ce2656016b0330fa993da SHA-256: b227b829cbdc448e67ea1664aa0282eeed6d2c2dac20119f8c3b94812b8a5ffd
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic indicates a malicious redirector link to 'ttraff.ru', suggesting a phishing or malware distribution attempt. The document body also contains the same URL, reinforcing the malicious intent. The presence of numerous external links, including the malicious redirector, indicates a link farm or redirection strategy to obscure the final malicious destination.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=importance+of+assessment+in+special+needs+education.+pdf
    • http://files.realappealhome.com/uploads/1/3/0/7/130776795/4133536.pdf
    • http://files.woolandthings.com/uploads/1/3/2/6/132681517/a3bd0d1f611796.pdf
    • http://files.thewrightograph.com/uploads/1/3/1/0/131070178/057a271c7f0.pdf
    • http://files.plevnamerinos.com/uploads/1/3/0/8/130813988/0f7a36f2.pdf
    • http://files.bluebarnbbq.com/uploads/1/3/0/7/130775145/4575080.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/80695192770.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/40716908532.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/crown_him_majesty_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/96394323307.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/77528116776.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/accounting_principles_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/xiluzanotoxuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/business_management_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/cinema_clock_windsor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/26193367027.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/forofogijatigota.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_off000070a8.bin
e6248731de4e5dfbdaf44cbe4ab08b58f622de117b903f991b0e7c55a68bea9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 5272 bytes
font_01_sfnt_off0000826c.bin
c361fc50c265bb8342eb40edf1e3e987ad0048dfd28645bfac6057d882cf8415
pdf-font-stream PDF embedded font (sfnt) at offset 0x826C 9920 bytes