Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf53b963df9a7f4…

MALICIOUS

PDF

36.1 KB Created: 2020-08-01 16:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5581a88a8776031f50ef7b4079384e04 SHA-1: dd0a8b300d9c67a144fd53b00be488812c0e8d4a SHA-256: caf53b963df9a7f4d31c2fb4787ca65fb7a4926bc640a8bb9c26a7ec402a8f73
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=flash+powder+wow', suggests a redirector to potentially malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous links, including those pointing to Shopify domains, indicates a strategy to distribute malicious content or phishing lures through a large number of external resources.

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.com/pify?keyword=flash+powder+wow
    • http://files.artisticallydrivenkc.com/uploads/1/3/2/7/132712324/rodokiturudi-zafema-figodo-pisamuraxu.pdf
    • http://files.rev-pile.com/uploads/1/3/0/7/130739648/bikuka.pdf
    • http://files.traditionsandrecipes.com/uploads/1/3/1/0/131070317/lonavimuv_puwedunuv_nemotogozirar.pdf
    • http://files.bensvintagevillage.com/uploads/1/3/1/8/131856158/gamonurimiserez.pdf
    • http://files.bmhspridetime.com/uploads/1/3/2/6/132682640/3378738.pdf
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/72726365108.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/37743963469.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9621/files/39014829391.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/mupozuvajalowelagekagowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6636/7895/files/83484433949.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1140/files/vanolenaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/56291654541.pdf
    • https://cdn.shopify.com/s/files/1/0436/2259/6768/files/teverim.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/fomidovenix.pdf
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/50086597106.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_off00004f33.bin
07e7b680c0ccfc3d81aee8d62a09ccb1e83b0a0b79ee309b5f96203e4cf8b85c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F33 5096 bytes
font_01_sfnt_off0000608c.bin
a9c81439cd9f76f0dd893e4a513bd6c994447bdda30eed1c3a66748a8424c358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 10360 bytes

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