Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d1c70fbbd080a3…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 21:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 699ec98cda63ab1c09cd788c5db4e84a SHA-1: a91b5b443685ec25be7f26db313e148ca5685f9f SHA-256: c3d1c70fbbd080a37c4f8b214af7f3bf3eff23996973e958908a1e324db45dc6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bitwise+asset+management+sec+report' which is flagged as a malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector or distribute 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.cc/pify?keyword=bitwise+asset+management+sec+report
    • http://komul.lightbox.at/uploads/1/3/1/8/131856703/suvuwuxebo.pdf
    • http://files.falconathleticsnj.com/uploads/1/3/1/3/131398259/diketimujosuv-gavegovi-nobosusawa-tegeso.pdf
    • http://files.sapritalia.com/uploads/1/3/0/7/130738988/6315467.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/amharic_english_parallel_bible.pdf
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/xunixapabigupesanuzo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/zalabik.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/79722013583.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/baidarka_plans.pdf
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/xagadadebolutoza.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2485/files/vosobavijifebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8354/files/kodiak_island_bear_guides.pdf
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/60904383678.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_off000066e8.bin
82eae8062d7f75d498ef453e96eebf231e4a764532ecd27349bd4793b9f2f55b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 5364 bytes
font_01_sfnt_off0000791c.bin
7c9b83d79ccde89381b04da8cd5e62444962684ec6a5d03bcdfe22024559439e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791C 10652 bytes

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