Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df26f4b7f3edf65…

MALICIOUS

PDF

45.5 KB Created: 2020-08-25 00:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e9012f9302e9e0f9440747376423db0 SHA-1: 44468d2f202d5b39200754499a5ea6c67b33ac3e SHA-256: 8df26f4b7f3edf657d8415055de0d04b9b733c84b8a1062671cbf79fa413c2f6
128 Risk Score

Malware Insights

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

The PDF file contains multiple 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=bard+spells+pathfinder+guide', suggesting a lure to a malicious site. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the final malicious destination or for SEO poisoning. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bard+spells+pathfinder+guide
    • http://files.englishzero.com/uploads/1/3/1/0/131069934/tunatikurutawaf.pdf
    • http://files.tmacatak.com/uploads/1/3/0/8/130814208/9ef92.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/93765951251.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/mupojuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/vaxuresoduvumekur.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/12444512562.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/border_full_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/5076/1377/files/ordering_numbers_from_least_to_greatest_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/55394092274.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/velekuraj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/ziwal.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/maxixeverarelapus.pdf
    • https://cdn.shopify.com/s/files/1/0457/9475/4726/files/video_ugly_alert_sub_indo.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_off00007518.bin
0c988c5f1098c33ae2d497fe3fe2473de407bea86f97f56c42d3054834f96d4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 5352 bytes
font_01_sfnt_off00008746.bin
da52ca40c46b2376a23dc96fb844678345db0ac231633436e23eece69ce3c58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8746 10112 bytes

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