Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bb03af6d20aab4…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 12:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 883d8f40097975c45e29dc38950ac8ac SHA-1: 5fb64ede4c70ca7cc35d2cc9dddb144d179127c4 SHA-256: 92bb03af6d20aab4af1dd5d3b24ead071279c92d9e6c1f486fcd8ca98d37efc0
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. This URL is likely used to funnel victims to a phishing or malware distribution site. The document also contains a large number of embedded links, many pointing to Shopify, which is flagged as a PDF link farm. The document body itself contains garbled text but includes the URL that triggered the malicious redirector heuristic.

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=calculating+average+atomic+mass+worksheet
    • http://files.rockymountainwands.com/uploads/1/3/2/6/132682124/6390931.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4587/files/29011028281.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/game_design_theory_and_practice_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/kikiruroxojaregu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/5157784058.pdf
    • https://cdn.shopify.com/s/files/1/0429/3804/0487/files/83065381714.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/psikotes_cfit.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/10654652072.pdf
    • https://cdn.shopify.com/s/files/1/0436/3059/2160/files/20763412690.pdf
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/51829241233.pdf
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/67545777391.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/learning_german_books_for_beginners.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_off000069bd.bin
5e3bd615088a7e1bf21335e347e3d4b9a1d1ad1857eeb116873841a99dbb1820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 5336 bytes
font_01_sfnt_off00007bc7.bin
31f3e4a0ac5793d70f6fce2c66fe8a74e6985cdbf081b40ecf3e11bc8c911c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC7 10596 bytes

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