Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b8e2c8d2064470…

MALICIOUS

PDF

54.9 KB Created: 2020-08-12 15:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cd0edf39417082897baa2b53012e3ab SHA-1: f15dc0196b26cfa2fc44842fc1d49712bc226b21 SHA-256: 93b8e2c8d2064470d32b3b2cfee38e488a943c1221ba24ad1728a50ee2159f79
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure for a 'color name list pdf download'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector. The primary malicious IOC is the ttraff.com URL, which likely serves as a gateway to further malicious content.

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=all+color+name+list+pdf+download
    • http://files.ag47silverjewelry.com/uploads/1/3/0/7/130738548/sojizuzetub_kusitobe_xexobezo.pdf
    • http://xabos.foxcola.com/uploads/1/3/1/3/131398140/kudukedo.pdf
    • http://files.diversejewellers.com/uploads/1/3/2/6/132682806/zurogerigenevazalis.pdf
    • http://files.kikayscleaningservices.com/uploads/1/3/1/0/131070169/14216a.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/zibokiwitibu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/sexanijenixefulutupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/formula_for_volume_and_surface_area_of_all_shapes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6944/files/32554741390.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/79683124156.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/xidotobutut.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/dagitumapijajuvel.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/49792753770.pdf
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/notikokesesatarij.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_off00008d17.bin
c36354e57a4fb4fd007b01b3fe0c01818bf35af05a569bce5c79a1255ea6527e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D17 5384 bytes
font_01_sfnt_off00009f51.bin
c94152d8a760fd950aafed661230495b23473b81b59da1e8d8fcadfc09a7baaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F51 15184 bytes

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