Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1350b553d4433c8…

MALICIOUS

PDF

33.0 KB Created: 2020-08-22 11:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e46702a6a27f6c07574131f2c4934d4 SHA-1: 1ad103ac036a10f590285e8b69f4895fecc144ce SHA-256: e1350b553d4433c82b98b2d3eb6291c3c5a7c57f10706fe6dab0f746b411b1cd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Geode invitation templates' and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to obscure the malicious redirector. The primary malicious IOC is the ttraff.com URL.

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=geode+invitation+templates
    • http://files.fcbcweaverville.org/uploads/1/3/1/4/131453990/megugodajagor.pdf
    • http://files.gregoryscommercialcleaning.net/uploads/1/3/0/7/130775347/8e044d06.pdf
    • http://dabuw.radoneast.com/uploads/1/3/0/7/130739783/4887890.pdf
    • http://files.boaksbeers.com/uploads/1/3/1/1/131163872/dukibuvuxom.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/mercury_4hp_outboard_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/96018472791.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/2029631090.pdf
    • https://cdn.shopify.com/s/files/1/0437/1477/3141/files/ordinal_numbers_worksheet_for_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/97890470894.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/fuguludat.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/castrol_edge_0w_40_a3_b4.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/98754847267.pdf
    • https://cdn.shopify.com/s/files/1/0435/4985/1811/files/buradanekefike.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_off000045b6.bin
b32b0c0402e1727b11817e90160ee751e27f62f083b5b24263a442d88e76f476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45B6 5100 bytes
font_01_sfnt_off00005701.bin
7ec0bbee253caf712f6808b90d70daa209d3257ed9ab4b568c7ba68428dd12d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5701 9472 bytes

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