Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce00136ab3dc1a9…

MALICIOUS

PDF

35.9 KB Created: 2020-08-11 23:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a6df9cc1f3e14ef18aec0470c43ed97 SHA-1: 98304ea03c4ef9a41f4da21c720f4128f62e38ae SHA-256: 4ce00136ab3dc1a9604dea2e8b9f7650cc990f3bf31c95fa967c5f335a39bd54
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a PDF redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body, though partially corrupted, contains text related to 'Strength training anatomy 3rd edition download pdf' and the malicious URL, indicating a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.ru/pify?keyword=strength+training+anatomy+3rd+edition+download+pdf.

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.ru/pify?keyword=strength+training+anatomy+3rd+edition+download+pdf
    • http://kafozuki.beebellaphotography.net/uploads/1/3/1/4/131407178/susozilab.pdf
    • http://baxonef.samanthajeankosakowski.com/uploads/1/3/0/8/130814328/7690100.pdf
    • http://files.karenfornes.com/uploads/1/3/0/7/130739810/9718655.pdf
    • http://files.aboutastraliancobbeagles.com/uploads/1/3/1/8/131871424/003e30b67eff4.pdf
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/les_ampli_op.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/download_ios_9._2.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/naroxilaxuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/79105343072.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/gba_emulator_ios.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/icao_annexes_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/1290699195.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/zijanakurejoxadi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/tawasaxuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/latoxewobevegika.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/tosedadivowafisat.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_off00004dac.bin
3bdab95a86f9b3622193a52c2209faae26f463f48c6206a2308d54c05ad22f9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAC 5740 bytes
font_01_sfnt_off0000611e.bin
a005fe077219226030fa28c73f7c0d49c181b15c6af8b6f50d3194af1d9ef6c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 9812 bytes

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