Malicious PDF — malware analysis report

Static analysis result for SHA-256 98897179e0ee6309…

MALICIOUS

PDF

50.7 KB Created: 2020-08-24 11:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a5c2514ed964ca2d13568cf28430528 SHA-1: bef631d1d7c049206bddd2bd8a6a79ab68e1690a SHA-256: 98897179e0ee63092839250d79e8543ceb4fa42709b30d8da0500e5597dcdfb1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=puffin+browser+pro+apk+uptodown'. The document body also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm designed to improve search engine ranking for potentially malicious downloads. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is a social-engineering tactic to trick users into installing unwanted software, likely to facilitate further compromise.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=puffin+browser+pro+apk+uptodown
    • http://files.fortyhours.com/uploads/1/3/1/6/131606819/jufezef_doradumakog.pdf
    • http://tuniwobe.ivoryoungequine.com/uploads/1/3/1/6/131607163/kifetilijor.pdf
    • http://papijidef.rrgmarketing.com/uploads/1/3/1/6/131637254/6400751.pdf
    • http://wefaw.coipuganda.org/uploads/1/3/1/4/131409474/251b8ddca031bd9.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/57680709238.pdf
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/fufabopujakofolozelesagu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/niterunupeniwopozaguri.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5868/files/79244094786.pdf
    • https://cdn.shopify.com/s/files/1/0440/6276/9302/files/76493726116.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8538/files/wekesulozumetemaborit.pdf
    • https://cdn.shopify.com/s/files/1/0435/4650/9467/files/21515600577.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/conversation_lessons_esl.pdf
    • https://cdn.shopify.com/s/files/1/0441/4596/7256/files/36681855911.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/scrum_guide.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006378.bin
1dbbd71f13a3a9b0d0fd58a571be460a5209a2e467aaaca1567726b77680b0a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6378 5300 bytes
font_01_sfnt_off0000758c.bin
1f339cd2415ccd6c83a7e656049dd6befbed1c7e231ce396cb49477f9cb4fcb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758C 3544 bytes
font_02_sfnt_off00008403.bin
7be1a36eb4f8abffb537224c6ed8fa232567226674cfb8dc770f4dc9dde988fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8403 10536 bytes
font_03_sfnt_off0000a7fe.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FE 16204 bytes

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