Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3492953400083e0…

MALICIOUS

PDF

53.0 KB Created: 2020-08-01 00:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3c53e79babbe5fad670699f0ab5d570 SHA-1: 030e04176705b5220e23cd0e5659261d438ec728 SHA-256: b3492953400083e09ea7e4e2428a1225c4bcd7ac829da5a3407697d57582a62c
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves leveraging these links to redirect users to potentially harmful content. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=light+grey+dye+minecraft
    • http://files.creativesomatics.com/uploads/1/3/1/4/131484603/zoledez-dinarumuwonaxu.pdf
    • http://files.gordoncentralperformingarts.org/uploads/1/3/1/6/131637316/c2d97439b62433e.pdf
    • http://files.urgyensonam.com/uploads/1/3/1/3/131379111/levalefize.pdf
    • http://files.shopnotjustflowers.com/uploads/1/3/1/8/131871480/pesutepepekugidedar.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/levivitisetevakawalevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/mopuvokuguramakokofap.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/27713030543.pdf
    • https://cdn.shopify.com/s/files/1/0440/0054/2878/files/tarelogewuxokevabes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/nigurunegitokitesag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/98976378150.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/19283147164.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/pobizanobewagu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/22592042158.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_off00009282.bin
d6ed988709b4de997569da0d2adea43298aa4a6edb091336e636f6dbcc39f09e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9282 5268 bytes
font_01_sfnt_off0000a456.bin
d6c71f4dc96f0558138a0c1f8640a31f7ed9989f8ca06ef65b73db8ce671563a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA456 10296 bytes

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