Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc09d993eb2e1ae8…

MALICIOUS

PDF

34.5 KB Created: 2020-08-01 13:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de789fb227611b4014751fc986e43f1 SHA-1: d64bef0aebf35a20816d6ad37fb0983757da0291 SHA-256: fc09d993eb2e1ae8878c479fd5fab97990e4b37d6b0334df6f8000cfbf9b051b
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text that appears to be song lyrics and a URL that matches the malicious redirector. This suggests a social engineering lure to trick users into visiting a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm 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.com/pify?keyword=a+warrior%2527+s+call+lyrics
    • http://files.christchurchdayschoolmtp.org/uploads/1/3/2/7/132710795/2941213.pdf
    • http://files.moaehawaii.com/uploads/1/3/2/7/132710603/jujomer.pdf
    • http://files.glitzybelle.co.uk/uploads/1/3/1/6/131606262/4082368.pdf
    • http://files.saltcavenh.com/uploads/1/3/1/4/131483317/fubugixun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/92926828340.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/logub.pdf
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/42635858081.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8203/files/16818470606.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/vigusoxifobuletujoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/35978918761.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/93286140586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97503793953.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/3512237761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golizikedakumeru.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_off00004cfd.bin
29804ee8ea7ca82e3ed82a77a6469437230c6e2be264f511f78fc50a1338b6ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFD 5012 bytes
font_01_sfnt_off00005e31.bin
ba41f2834834891959328a0910b848fb017eb42d4be187e79da48bb5fa2b6c04
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E31 9380 bytes