Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4946fbca0dc0754…

MALICIOUS

PDF

35.7 KB Created: 2020-08-25 13:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c924cc6f665681ae808b5aac9d493f0 SHA-1: 5eba45fea9ed6ee80842108635a4a8a96b57a522 SHA-256: e4946fbca0dc0754d1441736894c87cc2294ee0bd0c243b4b981c3bd775d755b
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 'https://ttraff.ru/pify?keyword=bewars+ringtones++com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily garbled, contains the suspicious URL and text related to 'ringtones', suggesting a lure for malicious content. The primary intent appears to be redirecting the user to a malicious site, likely for phishing or malware delivery.

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=bewars+ringtones++com
    • http://vonokiwux.fringeboutiqueto.com/uploads/1/3/1/6/131607163/vubamat_vazuju.pdf
    • http://luxos.betweenheavenandearth.org/uploads/1/3/1/4/131437756/ee03a.pdf
    • https://cdn.shopify.com/s/files/1/0459/7140/7008/files/avast_security_pro_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/yahoo_messenger_data.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0436/9504/6824/files/gmat_abstract_reasoning_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/83051858184.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/96420889628.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/virefar.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_off00004550.bin
dd7079ac9ed67f976fdac54cb4f76d985896b450b2db37e538abb40510e2e808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4550 5228 bytes
font_01_sfnt_off00005709.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5709 2116 bytes
font_02_sfnt_off000060d2.bin
b9f4b373f75f8dda91f77213a9ce95eea0507cdc673f4cf6ec0740cd27032af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 9824 bytes

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