Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f03108f1f6687ca…

MALICIOUS

PDF

41.7 KB Created: 2020-08-21 16:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af77dde4be75d776c2b831a9cf47b504 SHA-1: 5b11cfa1458761cf62e3d9ea4987aab77f814d18 SHA-256: 3f03108f1f6687caccef2112a9d5c3d259a1d49b968bcad1493c19c277cd07bf
150 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 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to 'medical emergencies in dental practice guidelines'. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm strategy. The primary malicious URL is 'https://ttraff.com/pify?keyword=medical+emergencies+in+dental+practice+guidelines', which is likely used to redirect the user to a further malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=medical+emergencies+in+dental+practice+guidelines
    • http://files.monstacartoons.com/uploads/1/3/0/8/130813755/kojidedug.pdf
    • http://vowomi.diananeebe.com/uploads/1/3/1/3/131383264/293125.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/xetupokumelepirorutot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/wexudivololodukeribiwopul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88020392138.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/nozumubi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/trembler_catherine_laborde_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/33958275636.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/26111668896.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/bismillah_khan_shehnai_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/37847695281.pdf
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/37723865296.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_off00006489.bin
dc72b795391cea73b5d0a526d1d5a3e9b978c578a497e24aa2a69823d474d7f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6489 5396 bytes
font_01_sfnt_off000076cb.bin
a7768b7a10c61523e88df30b7afd63799218a8f4493ce5706da0fb31fa3e34d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CB 10276 bytes

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