Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d06c99e1e2b9bb…

MALICIOUS

PDF

60.2 KB Created: 2020-08-01 05:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ff6bc64feb6f5d02ae9b55a921215f SHA-1: f131d6f7780f188c6d86a57755b0b72dece4c7cb SHA-256: a7d06c99e1e2b9bb754f05a3e433dfd5f669634ceca33b1be7e33397535d5592
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain the URL 'https://ttraff.com/pify?keyword=kenwood+dpx502bt+manual', suggesting a lure to a malicious site. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of external links designed to manipulate search engine results.

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=kenwood+dpx502bt+manual
    • http://files.oregonflightschool.com/uploads/1/3/0/7/130776567/lipapowukozav.pdf
    • http://files.madebyloulou.net/uploads/1/3/0/7/130738914/gowodenogu.pdf
    • http://files.jsshjournal.com/uploads/1/3/1/0/131070374/50524.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/saxararosemusuvo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/68393550898.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1919/files/20527546192.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/59518537122.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/benoxugidoxetive.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5485/files/kakokaruburojevixesamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/xotote.pdf
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/laxutox.pdf
    • https://cdn.shopify.com/s/files/1/0438/9722/5368/files/60737329631.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/wexunizudij.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/21614809677.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/digujamimalezifovapo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/jemilavajabepeba.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_off0000a366.bin
8c867c9bab6b056d27f6dfc79981bedb7a7dc7dfbb1f6419fc98ac50fa18509b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA366 5496 bytes
font_01_sfnt_off0000b624.bin
13734b8423a710b32bf35a1443d100613ae5b54676f16c1d111c007051cf09ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB624 14612 bytes

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