Malicious PDF — malware analysis report

Static analysis result for SHA-256 88946a832f51222f…

MALICIOUS

PDF

48.0 KB Created: 2020-08-23 15:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 488cd47f28f4d8438bbb325cd8771756 SHA-1: 2bf9d99a0a5b158d7a754bd2cdddf3c537335a23 SHA-256: 88946a832f51222fb54034eb127e430da5ff6ed1dbe57ec7874ed45d6fa2afa4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Christmas party invitation' and the malicious URL. The primary malicious URL identified is https://ttraff.com/pify?keyword=christmas+party+invitation+free+templates, which is likely used to redirect users to a malicious site. The presence of a link farm suggests an attempt to distribute malicious content broadly.

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=christmas+party+invitation+free+templates
    • http://files.cheekycherubscommunitylearningcentre.org/uploads/1/3/1/4/131483266/vepulav.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/72388987508.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/tipifexogegemalotilakim.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/xugezos.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/17478571245.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/43453358159.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/44148270330.pdf
    • https://cdn.shopify.com/s/files/1/0432/0916/2907/files/action_movies_website.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0429/1353/0019/files/94113516335.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/adepta_sororitas_codex_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0441/3286/0056/files/fijixovipuwilap.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_off00007e87.bin
625b3e7dd16b23a56dcd95e49cba61994c2a6f180176218f19616c498a5ae3e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E87 5208 bytes
font_01_sfnt_off00009026.bin
c73cddc86f5ee32885d18f99076e84f711e41753ffb685555dffa220110d463d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9026 10344 bytes

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