Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0c3b11b0a6e312…

MALICIOUS

PDF

39.1 KB Created: 2020-08-30 00:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 810cc69cc2ebf728a1e76415793ea204 SHA-1: 8448f5bb94aacf84554b07e546a25a2cf7c39a2c SHA-256: ad0c3b11b0a6e3126b9459cfd6a41a1b63157b8739aa2d2b184c0d7f8d605a9e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a free PDF download. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to 'static.usrfiles.com'. The primary malicious URL is 'https://ttraff.com/wix?keyword=el+hombre+mas+rico+de+babilonia+george+hill+pdf+gratis', which is likely used to redirect users to a malicious site or download further payloads.

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/wix?keyword=el+hombre+mas+rico+de+babilonia+george+hill+pdf+gratis
    • https://static.usrfiles.com/ugd/b8c837_e5cd7b02488f4d298ef00202ec2908f0.pdf
    • https://static.usrfiles.com/ugd/d1d005_851ab943a81642e2bb37bb02665a1a77.pdf
    • https://static.usrfiles.com/ugd/8b9728_99772a3f04d441d89bf1f311154ac518.pdf
    • https://static.usrfiles.com/ugd/22739b_5b5aeaf9f34646d08c1781a928c2bbef.pdf
    • https://static.usrfiles.com/ugd/93c935_28d40bd1f49349639d9197bdc34351d3.pdf
    • https://cdn.shopify.com/s/files/1/0438/4266/6656/files/adobe_illustrator_cs6_bangla_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/93900454987.pdf
    • https://cdn.shopify.com/s/files/1/0435/6620/3029/files/17904732695.pdf
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/theory_of_poker.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9014f6f1a234e708e17ecb817c429d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf85d2d082af469d8735312db3fb9416.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca7214c10c1b47438db081708e9ff2ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6513caed15544eba0daf023de20d427.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdf
    • https://cdn.shopify.com/s/files/1/0438/9847/0555/files/uji_non_parametrik.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_off0000564a.bin
6d956adec1b234bd1726e66c7423e672fe82f76689b5afe1b4feea8d967961b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564A 5668 bytes
font_01_sfnt_off0000695b.bin
6b07f24567f8339738b7eb6ded15f3a2a95c673c7534591f9f1ab3e3a79e2044		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695B 11124 bytes

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