Malicious PDF — malware analysis report

Static analysis result for SHA-256 45660ca0425cae41…

MALICIOUS

PDF

48.2 KB Created: 2020-08-06 15:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a69ffdfd4d315208ffcd5a7ac1f566 SHA-1: 702970a3c3dfcdbeab2f209b16439e45344be239 SHA-256: 45660ca0425cae414e6b9ba5f739ad69a1c24c1e7fb627ba3973a6cce9d8d4f7
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=test+para+detectar+autismo+en+ni%25C3%25B1os+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, some of which are flagged as confirmed benign but others are unknown. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting a social engineering lure.

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=test+para+detectar+autismo+en+ni%25C3%25B1os+pdf
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.pdf
    • http://vozogede.wibimassage.nl/uploads/1/3/1/3/131380485/wupuro.pdf
    • http://files.tropicalduckies.com/uploads/1/3/1/0/131070508/4ea6904605e1.pdf
    • https://cdn.shopify.com/s/files/1/0439/3811/9838/files/dasojagawefovuxab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/63413311478.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/96370271869.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/1524279700.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/69369132149.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/raligibofupedobogafexubuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8670/files/jegokewuxizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/vutiwovodinoleve.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/goluwarikozixewigekuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7240/files/54266830763.pdf
    • https://cdn.shopify.com/s/files/1/0439/8389/6734/files/pelavepuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/9083/6645/files/95321569402.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_off00007b04.bin
6e236a45d4515f46ea037d36ab80fcda7237e67149cf374f030609190ceccd7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 5428 bytes
font_01_sfnt_off00008d22.bin
dff046f9f33788be4dcc32a71268a18df30d526ae930d0a228b42f8dd5ac9e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 11216 bytes

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