Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebc02ca30093c6a…

MALICIOUS

PDF

42.9 KB Created: 2020-08-01 03:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6c0175bb4301bb73edaf002a24bf302 SHA-1: b658e9eb39d0f9dd5ac6bb1f56b67e93bcf525ce SHA-256: 3ebc02ca30093c6af1c2a880004b9045d005014ebc1f16b1742a812ab4c1ff55
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=mov+to+jpg'. It also contains a large number of embedded links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, reinforcing the lure.

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=mov+to+jpg
    • http://files.neenaroumellauthor.com/uploads/1/3/1/6/131606537/boniduzemupat_jozafuxajo.pdf
    • http://files.tigerteammarketing.com/uploads/1/3/1/3/131380600/8a0e87e4156c15.pdf
    • http://files.shoprlsg.com/uploads/1/3/1/4/131483009/duzilulogegen.pdf
    • http://files.trinitylutheranchurch.com/uploads/1/3/0/7/130738859/2085859.pdf
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/92779886530.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/vodimudagigafapazuviwo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8707/5230/files/body_beast_workout.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/14909671012.pdf
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/kuvatibadufudisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/kigoxufakodo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/11250175755.pdf
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/torawomudasolasudedewej.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/wovuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zokiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/26164254069.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_off00006c69.bin
b4c32b56096333ce92f0aced9538e821b4bfb3f0ab77f4b44c24b1c50ed72c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C69 4612 bytes
font_01_sfnt_off00007c53.bin
07351fc1602c672b64e39f2a060eb59a8834e3cff7ea35e408bcd573b9516c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C53 10252 bytes

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