Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd909d2f185d61b…

MALICIOUS

PDF

49.0 KB Created: 2020-08-28 03:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c184ab76bd339606f2222180cf0fc40d SHA-1: cc04aae6c1f145d6d69de310d98672371f33a2ca SHA-256: afd909d2f185d61bc424cc5b730aaa37fb712e5d4ed7e8474a783cb220e30949
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. It also exhibits a PDF link farm, with many links pointing to Shopify domains, though one of these is also a redirector. The document body is heavily obfuscated but contains the same malicious URL. The primary attack pattern involves luring the user to click on these links, likely leading to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=mal+estar+na+civiliza%25C3%25A7%25C3%25A3o+freud+pdf
    • http://files.zamdevelopsj.org/uploads/1/3/1/1/131164534/7449164.pdf
    • http://sijotexun.graceforthebroken.org/uploads/1/3/2/6/132695780/vexemawepogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/lynnhaven_fishing_pier_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/2630290753.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/warframe_bounties_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/10678825294.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/28451331427.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/9875842284.pdf
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/50498135577.pdf
    • https://cdn.shopify.com/s/files/1/0451/3293/9429/files/spanish_learning_books_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/fewenapetezenewipuboj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/66318998552.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/39339557823.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/wafebemumojodoxagavukovob.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_off00007a8b.bin
78e7eebe867995fa02529ef5f86cc3a472c1a7a8fee8420f0944b04f82e862bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8B 5764 bytes
font_01_sfnt_off00008d67.bin
ff7e8d7d67db5d67fc88d28226fff7b785c2c54ac891876900ee4f552733ecb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D67 13052 bytes

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