Malicious PDF — malware analysis report

Static analysis result for SHA-256 99cc2dda47c521ff…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 13:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a8c2eb39ad146b66bbee3c6a278204a SHA-1: 69f970a91bca7a3025ee4216ec69e40749207e74 SHA-256: 99cc2dda47c521ffc54da0084c3c99c22088182a3277c65e0ac0c14f33ca6798
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.cc'. The document body also contains this URL, presented as a search result for a specific PDF. This suggests a social engineering lure to trick users into clicking the malicious link. The presence of numerous other links, many pointing to Shopify, indicates a link farm designed to obscure the malicious destination.

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=bailey+and+love+26th+edition+pdf+google+drive
    • http://files.lalasline.com/uploads/1/3/1/4/131438353/xisir-saguxuziji-xomizolid-sejete.pdf
    • http://files.fbchartland.com/uploads/1/3/1/4/131483027/37f7be49b4.pdf
    • http://files.isnsalihsanacademy.org/uploads/1/3/0/7/130775649/5e8eafc296cc.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/62209140777.pdf
    • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/rejawoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9843/9837/files/api_20ne_biomerieux.pdf
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/aptitude_questions_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0432/6850/5766/files/69410371265.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/11709347380.pdf
    • https://cdn.shopify.com/s/files/1/0436/4523/9456/files/junumuxaxadefidutubamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/a_small_creature_is_scrambling.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/93204387316.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/nevokoxorara.pdf
    • https://cdn.shopify.com/s/files/1/0432/6119/8500/files/35251280798.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/bituralogawukazebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/mejomiwolakolitepagawa.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_off00006666.bin
e449bb3c8174563884399a6550e7bdcd94e8e7a7c3090c54658d86b93c8f2c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 5624 bytes
font_01_sfnt_off00007993.bin
5329c120fbbba3db59f6e1ef13031f0ae1f925461d315e7e3c1b9911fd19e303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7993 9876 bytes

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