Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedc87668143178f…

MALICIOUS

PDF

52.1 KB Created: 2020-08-02 05:36:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9e2f1db04beb30487fe0a88513e58aa SHA-1: 7e1752145ddcbcb7d6f419107cb7589068885303 SHA-256: bedc87668143178f7dc0d198a30e2c0b9f1f47834369f98af00ea0368fcd3b1b
150 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links. One of these links, https://ttraff.com/wb?keyword=praga%20mapa%20turystyczna%20pdf, points to a known malicious redirector. The document appears to be a link farm, designed to distribute traffic to numerous other PDF files hosted on various domains, likely as a method for distributing malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=praga%20mapa%20turystyczna%20pdf
    • http://files.thesaviorsstory.com/uploads/1/3/2/6/132681647/b4ed2d753bf.pdf
    • http://files.primefitnessmd.com/uploads/1/3/2/8/132815365/1c6ce23695.pdf
    • http://files.sassyandgrassy.com/uploads/1/3/1/6/131637679/sugidupotego_mupifumajo_fenafolato.pdf
    • http://files.ravenartcenter.com/uploads/1/3/2/7/132740499/e7f022e1.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/88308302592.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/dowosogidorutade.pdf
    • https://cdn.shopify.com/s/files/1/0439/1242/9723/files/42340735700.pdf
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/torutomugogab.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8616/files/caterpillar_955h_traxcavator_operators_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/uninstall_python_package.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/44475069238.pdf
    • https://cdn.shopify.com/s/files/1/0431/1924/7514/files/boseradojeluta.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/vofuvofavanifusel.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/10226776565.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/41954020623.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/57611208203.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/rekozomidelelunapugoxut.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_off00006748.bin
9c38f8899a9e1ef3707fe67fbe9affc0c1623c4edd6e23d6a56015f4f0fca23d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6748 5200 bytes
font_01_sfnt_off000078e0.bin
d6fe84bcfe8ba4b0b5c80d46cdea5286dc75a533337eaafb74e05d1045844fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E0 11668 bytes
font_02_sfnt_off00009da7.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA7 16312 bytes
font_03_sfnt_off0000b332.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB332 4324 bytes

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