Malicious PDF — malware analysis report

Static analysis result for SHA-256 afdf614a3a03e192…

MALICIOUS

PDF

39.9 KB Created: 2020-08-02 01:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63f00b21f8fc061975bfe5f03697c9fe SHA-1: 3ac1669648b1b20b853eb03e3eac1fc7c19eef2c SHA-256: afdf614a3a03e192dabc8d5eb56e0b4c8e48ff541696ed11290c2d2e14873e8d
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to a critical heuristic firing for a redirector link. The document contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that ultimately leads to other PDF files hosted on Shopify. This suggests a link farm or redirection scheme designed to obscure the final malicious destination.

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=docker+exec+into+container
    • http://files.projectpurityseeds.com/uploads/1/3/1/4/131452938/2824602.pdf
    • http://files.charleysplacemorrismn.com/uploads/1/3/2/7/132741029/fasimagiwafufof.pdf
    • http://files.bmwenthusiast.ca/uploads/1/3/0/7/130738765/1ef63523b.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6115/files/1771821148.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/fadeluw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/25042888207.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9818/files/12363217012.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4871/files/wapuvexesama.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/54771438608.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/sejagiboluvomiso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/domasataj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/sunavegamapuzugofuxujil.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/73598345132.pdf
    • https://cdn.shopify.com/s/files/1/0430/6567/1833/files/tenuvate.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_off00005d9e.bin
5a44e6e7a55524f2a538c5877798578d895fa7288c3d65311e8cc87524d8c74b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9E 4712 bytes
font_01_sfnt_off00006dc3.bin
cecda41bec9bd80dd0d9547ce7beca2558318af3474a27fdca008e6fb11da4b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 11248 bytes

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