Malicious PDF — malware analysis report

Static analysis result for SHA-256 591bd2026f1957ee…

MALICIOUS

PDF

54.3 KB Created: 2020-08-01 05:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cb7b75bf6f1ef77960976f9b182ab89 SHA-1: c02165164728d3d7c92f6c2e9f6d183198f834b1 SHA-256: 591bd2026f1957eed55808916876be005d527308112f1a67fa7d1f881d47fdb9
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Ds freeshop title keys' and the URL 'https://ttraff.cc/pify?keyword=ds+freeshop+title+keys', suggesting a lure for potentially fraudulent content or malware. The presence of a 'download button' heuristic further supports a malicious workflow.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ds+freeshop+title+keys
    • http://files.porttouristpark.com.au/uploads/1/3/0/8/130814076/3155361.pdf
    • http://files.dkg-gammachi.org/uploads/1/3/0/9/130969385/wozijurojolixufube.pdf
    • http://files.courtingkenya.com/uploads/1/3/1/4/131437418/20369f8.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/98383542066.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/ninolosaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/the_hangover_full_movie_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1568204463.pdf
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/37064494843.pdf
    • https://cdn.shopify.com/s/files/1/0430/5282/6777/files/titoxivularuzesef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/zoguravusaninixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/suduvafafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5249/9098/files/gaduwinodonirunenosim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/tesetejofevox.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f5f.bin
2e6d64e6004b44ed251a56ff06afe23899300137a7f1d0dd8cd9e4d5f12e4d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5F 11220 bytes
font_01_sfnt_off000082a4.bin
5711b8bdad8cbb21f78e939d3fafa5b9f1d7854002ef97abba8fa4b44549b745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 4944 bytes
font_02_sfnt_off00009384.bin
c6323526ee707402cb56c5b18616afa0a5d6740c66c607ed8b674775e192d601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9384 10196 bytes
font_03_sfnt_off0000b6b3.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B3 16204 bytes

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