Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d04c0b621e8f6d…

MALICIOUS

PDF

46.4 KB Created: 2020-07-29 09:34:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 702fea9ecc5af39b053d27d0a303a718 SHA-1: 5ba40c062cb4cf4f8dd10e830efd38b0060fca6b SHA-256: c5d04c0b621e8f6db7a4ac24b33dd8b9733db5d9a24f7c8cdbe133c4b3dbbcf4
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is a known malicious domain. Additionally, it features a large number of embedded links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains keywords related to Android backups, likely a lure to entice clicks. The presence of a callback phishing lure heuristic further supports a social engineering attack vector.

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.cc/pify?keyword=android+7+force+google+backup
    • http://files.kellicatesmusic.com/uploads/1/3/1/4/131453421/savowujunino.pdf
    • http://files.karrathacaravanpark.com.au/uploads/1/3/0/9/130969364/d149b0.pdf
    • http://files.beautifulyounailsandspa.com/uploads/1/3/0/8/130874587/d0250ae14.pdf
    • http://files.tangofloorspace.com/uploads/1/3/1/0/131070841/7ab17b96dc43.pdf
    • http://files.10keventz.com/uploads/1/3/1/6/131606069/gupikukilovit-bivafegevig-jarotanugunosa.pdf
    • http://files.tangofloorspace.co
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/58197008689.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/64979717356.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/26635529188.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/44717563782.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/83993553503.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/34928171946.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/96086667445.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/xenetisunotuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/90187003749.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/58241996862.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/sozulazuwugedevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/8558470844.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_off00007356.bin
f69a34f75492d10356f8d211914d5367bd31f9d6ba825f8eb549ab25b13d342f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7356 5220 bytes
font_01_sfnt_off00008522.bin
311d6cc19badef12cd0856a9fde648e650f04540ea3708e6dacaf94f7100e5ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x8522 12480 bytes