Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e17c79f2c8d9a8…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 22:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84b0c79820758bcdc7cff60c04f8a149 SHA-1: a1fbb1e9c370fa9db78d4a19f6ce7ced63646449 SHA-256: 43e17c79f2c8d9a8ad61d0a4f0c404210ab7549846cb1a157c61f88a0ae376c2
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=asvab+for+dummies+book+pdf', suggesting a lure for users seeking specific PDF content. This indicates a likely phishing or malware distribution attempt via a redirector.

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.cc/pify?keyword=asvab+for+dummies+book+pdf
    • http://files.goodatlooking.com/uploads/1/3/0/8/130874433/valiveligato.pdf
    • http://files.accentfloralanddesign.com/uploads/1/3/1/4/131454355/nalivod-fasadebafu-kewimepujediv.pdf
    • http://files.moniquemariegelineau.com/uploads/1/3/2/3/132303230/4111344.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/witcher_3_unification_patch.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/reset_mac_password.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33647917740.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/jezuwikikerebegivid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/ignou_assignment_first_page_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/2953083446.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0628/8291/files/bioethics_articles.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/64508828719.pdf
    • https://cdn.shopify.com/s/files/1/0439/7305/0526/files/23989605773.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/2716945037.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006114.bin
0e5d7ea168cdf608c27f271dadf62087ff0e97674e951841820ebce8933a804f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 5104 bytes
font_01_sfnt_off0000726c.bin
a3cac1c032e4123a97d2f356828d6ddbde16f11fe3e87a3b59b9c60410e24723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 10640 bytes
font_02_sfnt_off0000969f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969F 4324 bytes

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