Malicious PDF — malware analysis report

Static analysis result for SHA-256 577dd83537b735d0…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 10:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ee178e769b57011d3dfd5ccac9da2e7 SHA-1: 1192d3f64f7f36743cb3b0c615fd572cdd20ea4c SHA-256: 577dd83537b735d0b4ab5d5b50cf99a8a38de36304c8e43166e7473abdce029d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=system+administrator+interview+questions+and+answers+2017'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of a PDF link farm heuristic further indicates malicious intent, likely for SEO poisoning or traffic generation to malicious sites.

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=system+administrator+interview+questions+and+answers+2017
    • http://files.c-moreflyingschool.com/uploads/1/3/1/4/131437561/3850bcacc1e3f7.pdf
    • http://files.ineslampreia.com/uploads/1/3/2/7/132712326/0a2a2aa.pdf
    • http://dotesip.monaghanladiesfootball.com/uploads/1/3/1/4/131406436/20822fd9.pdf
    • http://sotekif.why-jewellery.com/uploads/1/3/1/4/131407406/2391369.pdf
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/answers_to_crossword_puzzles_with_friends.pdf
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/veveliwizoruto.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/lotuxiluluni.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/dirikep.pdf
    • https://cdn.shopify.com/s/files/1/0451/4122/9733/files/oxford_english_to_tamil_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/72630142323.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/13980588881.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/1/0436/8669/0969/files/answers_to_crossword_puzzles_w

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007823.bin
d6b324d5cd886430789b05f88d18805d553b0ff82632491d1abb3b345240bdf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7823 5828 bytes
font_01_sfnt_off00008bfc.bin
953471345dc0030d03db632746e23c9c5fccb5921974b33951cc55bbc466dfd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFC 10128 bytes

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