Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c900da5272097c1…

MALICIOUS

PDF

38.5 KB Created: 2020-08-16 22:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4376374bf188529dbd593456363a20aa SHA-1: 3ad5dbf2b035bc3d2c3628f53b35e8be15043565 SHA-256: 8c900da5272097c1c49eecfabd87b5e9e96029aab2dc6f1455c572b9884c3048
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure at 'ttraff.cc'. The document body text and embedded URLs suggest a lure related to gaming ('aimbot free fire') to entice users to click on these links, which likely lead to further malicious content or exploits.

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=aimbot++free+fire
    • http://files.opengatetheatre.com/uploads/1/3/2/8/132814980/3754155.pdf
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/valotimakobekilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/jekafodezegexaxopatejebup.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/68524883697.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/kolisiziferabus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/xavebuvagodezebetabavepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/sistema_respiratorio_superior.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/vipexejomip.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/informatica_training_material.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/maxajatudinepazulujij.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_off00005b64.bin
2d69bc598ce2d8d23f1fc2a52db73a7cf15823a8b10a7687f11ca1ae074885a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B64 4624 bytes
font_01_sfnt_off00006b09.bin
7e9471b31ee8a1c3dd6219f55fde3d7503700111e3ef5fb1655b746cf14937fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B09 10244 bytes

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