Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0506177ce831825…

MALICIOUS

PDF

39.1 KB Created: 2020-08-24 13:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dbf9ffd7902f97ecb757d959289f63c SHA-1: f151d8d8f541a4c7beb72f86e025fe7cd51ec362 SHA-256: c0506177ce831825faacdd7f323826451eb95c3caca116511be2f6515b3d779a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Cv template photoshop free' and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, intended to appear benign while the primary redirector is malicious. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=cv+template+photoshop+free
    • http://files.onceinawifetime.com/uploads/1/3/1/3/131379639/temifozawanibe.pdf
    • http://files.eatplaybloom.com/uploads/1/3/2/6/132682684/zumotusapanide.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/mabokidalowala.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/11785701154.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/sofovanomavafoxomesorex.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/zovudapivar.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/32223894210.pdf
    • https://cdn.shopify.com/s/files/1/0433/4577/2698/files/wopugasugidonujebol.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/80928850015.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/linomarogujiwam.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/miwaputemiri.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_off00005cb6.bin
89dad61bc90379b410a4b644acb0be86267b49caacff6c2d60780c271490368f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB6 5108 bytes
font_01_sfnt_off00006dee.bin
34d9f77070ce02c63799526d206c16e578e7e5070d226a0a43ae64915b5a2090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEE 9968 bytes

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