Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f350d3c8e8ddd59…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 17:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9204136c11e537b5f17ec3baa6742537 SHA-1: 5118794148339c105d9e72714915afd6141b0a6f SHA-256: 2f350d3c8e8ddd59f3fa41a40ff3143222b9d074f929adaef0f49e2a84302cc0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is associated with malicious activity. It also features a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation. The document body and heuristics suggest a lure related to the Google app store and potentially a remote support tool, indicating a social engineering attempt to compromise the user.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.ru/pify?keyword=google+app+store++for+android+tablet
    • http://xafime.pierredurette.com/uploads/1/3/0/7/130775701/kesabaxifudupof-letevem-fitifefas.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/90046176024.pdf
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/98220705286.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/78863288419.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/kixadagifizatatesupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0142/files/81549145625.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/esfolio_volcanic_ash_essence_mask_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/51222402655.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/18590086330.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tavolotifejenirogamofiv.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/23196477756.pdf
    • https://cdn.shopify.com/s/files/1/0445/3584/0932/files/dunkirk_forum_topix.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/sosurotogu.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_off00005e5a.bin
17344dfaec0bc700e8f7274ceeceacd88c75a1961797382822e8585c326029e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5A 5380 bytes
font_01_sfnt_off000070b0.bin
7ab05dc57263c80883b2c1b5bbbd8049b34a35a465314443b8df43bfa7de70cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B0 10200 bytes

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