Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b3dd05683efa22…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 15:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41393cab5ca56bd68baf5c097f4c569f SHA-1: 845a3e0daa79ec4c9669338093700b04d40b13cf SHA-256: d5b3dd05683efa222b017925abd15b7614755bc2388f97e225f826ab5477f102
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 pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to obscure the malicious destination or engage in SEO manipulation for traffic. The document body, though partially corrupted, contains the same URL found in the redirector heuristic, reinforcing the malicious intent.

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=acceptance+and+commitment+therapy+pdf+worksheet
    • http://files.stpaulwp.org/uploads/1/3/0/7/130775231/34db62e57a.pdf
    • http://files.heartlandwestfargo.com/uploads/1/3/1/4/131410167/ragosuvali.pdf
    • http://files.seacoastdockdogs.com/uploads/1/3/1/4/131453436/49b2febdcc.pdf
    • http://files.rolandbyrne.com/uploads/1/3/1/8/131871535/busovikotili.pdf
    • https://cdn.shopify.com/s/files/1/0432/7584/5792/files/tetosapufujisaxibijexewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/collins_scrabble_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/4111/9647/files/bruhn_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/vepez.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/open_heavens_devotional_2015.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/63224544467.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/31952900720.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/stihl_ss_55.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gadawatozuwagujezudoru.pdf
    • https://cdn.shopify.com/s/files/1/0448/0057/3601/files/nier_automata_official_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/reliability_centered_maintenance_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/giant_carp_sekiro.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_off000072e6.bin
639303999150e8f1970ef0c14557c24c17bf3c0de5609be90d90f029f7872321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E6 5612 bytes
font_01_sfnt_off000085d6.bin
3dddc94d08781a4d0346494d4499310ecf104e88075b21387b878318136105bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D6 10684 bytes

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