Malicious PDF — malware analysis report

Static analysis result for SHA-256 983473a1723f9c90…

MALICIOUS

PDF

45.3 KB Created: 2020-08-01 09:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 690fa0a27fc86c646328eb29289348cf SHA-1: 3c76ec3a48e8224bec4dff1a39aa1da9065110ec SHA-256: 983473a1723f9c90a97504dbd4e62fd5df4625f12204629159e05451670176ba
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=how+to+uninstall+office+on+mac', suggesting a social engineering lure related to software uninstallation. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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=how+to+uninstall+office+on+mac
    • http://files.kimkirch.com/uploads/1/3/0/7/130775827/welobozutudirol-fulunim.pdf
    • http://files.bloc145.com/uploads/1/3/1/6/131636995/wexaj_ruviguruwo.pdf
    • http://files.wanderingwildandfree.com/uploads/1/3/1/1/131164537/xatinepapelawo_xetemisewonit_zamozuw_nidolomug.pdf
    • http://files.danieleantoniella.com/uploads/1/3/0/8/130873718/5950764.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdf
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/57243494080.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/56642546512.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/piporuw.pdf
    • https://cdn.shopify.com/s/files/1/0438/5934/5573/files/biwotim.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/naripezuzirilaligabegizoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/tinaximaditux.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/61075798723.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/80335094606.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_off00007355.bin
d6ba9887b69ceb65b3c9870b83f6a4541ab29992d4b28eb60dd7a373c53246c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7355 4984 bytes
font_01_sfnt_off0000844b.bin
82a14e0bca0d498a528703d02db5922413fb740b5e21ad4aea0a727e14decb38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x844B 10660 bytes

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