Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd6399f58631ac3…

MALICIOUS

PDF

40.6 KB Created: 2020-08-22 22:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44c48a1d03a15a82d409c12b7d979559 SHA-1: a48a6026b9d01d7a2856d810c043b83d0bd1632e SHA-256: cbd6399f58631ac3d6522ad2e9852ce321d12b37e3ae4af347964e2c0ba04581
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a 'Macy's twin bed sheet set' and the malicious URL itself, suggesting a lure to entice clicks. The presence of a PDF link farm heuristic further indicates the document's purpose is to distribute links, likely to malicious sites.

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=macy%2527+s+twin+bed+sheet+set
    • http://files.zeropointmechanic.com/uploads/1/3/0/8/130814343/4976958.pdf
    • http://files.bearbuttewater.org/uploads/1/3/0/7/130775368/mexeti_megabazinoraz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/knowledge_of_accounting_principles.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/wath_is_love_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/dipisuwezakadobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/xavoxirifemukibinilu.pdf
    • http://files.yazan.people.ua.edu/uploads/1/3/0/7/130776452/godozodoronezuze.pdf
    • https://cdn.shopify.com/s/files/1/0443/6430/0444/files/calendario_serie_c_19_20.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/54673982598.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/52922760752.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/cfd_in_fluid_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/jajivesikarege.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_off00005c33.bin
a224e145b108b95e27042a126e8b5c257af6a2f4823af1b8a489b8a4488083fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 5272 bytes
font_01_sfnt_off00006e33.bin
88976101af276d14277b2a10a0f1916c94734819e36085a467469f8d1e74e0ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E33 12172 bytes

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