Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d8add551458e48…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 15:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 461b2e10272b6e127fe3b82f656aeef1 SHA-1: 7989586662f0a73ad715c51b11a1aaafb815a415 SHA-256: f0d8add551458e4880203b3c5656dffb22b2c50405a98045b544ea862c9fd6f6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL to the malicious redirector and references to educational content, likely a lure.

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=conjunctions+to+express+time+and+cause+worksheet
    • http://files.familyminded.com.au/uploads/1/3/0/8/130873822/jejemagapi_fonolago_geguni_xawomavuf.pdf
    • http://files.bhaktiyogi.org/uploads/1/3/1/4/131437276/2033441.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/luzojepezinolu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/97750029068.pdf
    • https://cdn.shopify.com/s/files/1/0429/8316/2019/files/minecraft_ps3_adventure_maps_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/difference_between_ontology_and_epistemology.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/molutorebelewudeni.pdf
    • https://cdn.shopify.com/s/files/1/0428/1516/0487/files/57457068835.pdf
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/chart_patterns_in_technical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/nadusot.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/kukusivo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/tafabusefi.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_off00005b98.bin
d560c15b5eb5995d413e1c4baccca9345dfaad9e8407829fdadab652bd3dc719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 5484 bytes
font_01_sfnt_off00006e29.bin
8c0e4619c1846e6555a6ac133f1befdd374f37f4bd25187c7ce69d661e98d75f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E29 9900 bytes

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