Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e39143fddfcfda…

MALICIOUS

PDF

42.0 KB Created: 2020-07-25 22:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c024e5bad52ff1db9697e414562e7e0 SHA-1: 20071b51f59653a41b14730abd5a2b3b0cee89f6 SHA-256: a4e39143fddfcfda4d3629221061e8cad632cdb1ca05850951984535b7a9996a
142 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This indicates the document is designed to lead users to a potentially harmful website. Additionally, a heuristic for a 'callback phishing phone lure' suggests a social engineering pretext. The document body, though heavily obfuscated, contains text related to a 'Thames water customer assistance fund application form', aligning with phishing or scam lures.

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=thames+water+customer+assistance+fund+application+form
    • http://files.psfcfiji.org/uploads/1/3/1/4/131437283/dutuxopazaf.pdf
    • http://files.rwmassets.com/uploads/1/3/1/3/131379680/rosekesugi.pdf
    • http://files.childrenareourspecialty.com/uploads/1/3/2/3/132303092/310f90cbc6.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/19237258715.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/gajeminegibozopip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/8272131282.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/57868935410.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/27665251666.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/408851528.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/todanotemepimujopefunik.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rupegoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4718/2759/files/goboka.pdf
    • https://cdn.shopify.com/s/files/1/0437/2122/8442/files/dudigitatewogoremefi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/83121747842.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/70511404613.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/77208403739.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/
    • https://cdn.shopify.com/s/files/1/0431/5847/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006746.bin
258ecacefd5976d4cf4e746d4b016ed8dd1c05ea991bbcab63df7daf79f29e29
pdf-font-stream PDF embedded font (sfnt) at offset 0x6746 5320 bytes
font_01_sfnt_off00007940.bin
bd1fab03e257e9d3f0dacdc4186b9eec85c0d02e20b4c4e8f3b2b487bb3d79f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7940 9620 bytes