Malicious PDF — malware analysis report

Static analysis result for SHA-256 8389c0e3dcd306e9…

MALICIOUS

PDF

54.2 KB Created: 2020-09-04 05:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a7fcfc361bc7616ff8252678953eb14 SHA-1: c963400eeabd302f77e1ae9768823cf601125617 SHA-256: 8389c0e3dcd306e9a5a726f71f792c58bf4fb91a7abbc85480beeb62660ed372
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.me/wix?keyword=assassin%2527+s+creed+3+trophies+guide', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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.me/wix?keyword=assassin%2527+s+creed+3+trophies+guide
    • https://cdn.shopify.com/s/files/1/0431/6522/1023/files/leibel_and_phillips_textbook_of_radiation_oncology.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/xewepafupidebefis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3503/2737/files/fazade.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/desi_desi_na_bolya_kar_ming.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/30453865056.pdf
    • https://static.usrfiles.com/ugd/b8c837_be72e937c562439a986832a6616e0d42.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/livilidaviwapaf.pdf
    • https://cdn.shopify.com/s/files/1/0462/4138/2560/files/24583832570.pdf
    • https://cdn.shopify.com/s/files/1/0434/5502/1206/files/deliworubarebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/fofutovajirixe.pdf
    • https://static.usrfiles.com/ugd/79cb75_d6e3425cc67f49feb5ba075ef5885734.pdf
    • https://static.usrfiles.com/ugd/868f76_a20e352b252c4c30934dd7dec55b64f6.pdf
    • https://static.usrfiles.com/ugd/f17c08_d165f59ec18d4a62a86f2cecea97a414.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_off000096bd.bin
385e0444f106b87266685b6b72931a179b73166ba54ca46171d0badee93f574a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96BD 5492 bytes
font_01_sfnt_off0000a968.bin
2508473152ff7fdb3f2e68154e39472a3f51e94d77190ca8bc5ee7f87f5758c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA968 10196 bytes

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