Malicious PDF — malware analysis report

Static analysis result for SHA-256 5716603c51c3396b…

MALICIOUS

PDF

40.7 KB Created: 2020-08-29 05:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b77b208c8079f6271a0351f239a19b1 SHA-1: 58af9c6660692f7339f4adbdc24efaab6be251cb SHA-256: 5716603c51c3396b3092bd059799c459bc17823caa90190aff32887a81058d8d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for streaming content. The presence of numerous embedded links, many pointing to 'static.usrfiles.com', suggests a link farm or redirection strategy. No scripts were extracted, limiting the analysis of direct payload execution.

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=after+streaming+vost+english
    • https://static.usrfiles.com/ugd/b8c837_b556b6a3dcc648a1869f666da74c7f8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a1f5c131d9f4c5cbc50b2a8917f02dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ec9cfcc516241eb91aaee5f9f0ea4fd.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/79405276790.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/37991758172.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2245/files/bedevilled_full_movie_480p.pdf
    • https://static.usrfiles.com/ugd/b8c837_69eacfa2fd24478ab8177c7c07243d6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd8442e333d147ee8d3fd2f1a8acb025.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fb312a896c146bcacce24a8f9b6a623.pdf
    • https://static.usrfiles.com/ugd/b8c837_98354f1194a24134a6492c032af1aa61.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9e55e4022a0413fa662276bc3f6391d.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/mulabinupuwuragukumonusez.pdf
    • https://cdn.shopify.com/s/files/1/0460/1774/0967/files/anduru_kutiya_thula_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/73043821278.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/
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/mulabi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006119.bin
28b3e88e71e142df3e584c392231d0f93e9eecd5ce6b874254b934071a760c83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 5228 bytes
font_01_sfnt_off000072bf.bin
884409833c0c10dfa883a230ae3de3bcaa54d1d2f22f720a435264603b8f3ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 10360 bytes

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