Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c675ebf0ba0be32…

MALICIOUS

PDF

44.4 KB Created: 2020-09-16 04:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 019a42f318c5b8ed8392aa9c78cd30f2 SHA-1: 7e5e4b063632420e71201e5c92edeb89a16cf25c SHA-256: 2c675ebf0ba0be3206e95e175a9b61b3536b567124fbaa65772e8898ca436eb6
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary malicious URL identified is https://ttraff.ru/wb?keyword=pan%20newsreader%20mac. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content. The ML classifier strongly supports the malicious verdict.

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.ru/wb?keyword=pan%20newsreader%20mac
    • http://dajetak.honeycreekgoldendoodles.com/uploads/1/3/0/7/130739443/ritifeborizewupatuse.pdf
    • http://bimedavan.mooremelodies.co.uk/uploads/1/3/2/8/132814930/regofivez.pdf
    • http://files.londonstreetgallery.org/uploads/1/3/0/7/130739039/lixujivusawa-daxeveji.pdf
    • http://files.speakkolleen.com/uploads/1/3/2/3/132303175/2664462.pdf
    • http://sofak.hooligantheatre.org/uploads/1/3/0/9/130969139/ba208ce12.pdf
    • https://static.usrfiles.com/ugd/3be3a7_003a3cf965be498d87e354b45ae1d1f3.pdf
    • https://static.usrfiles.com/ugd/96768c_68703a4ffcdc457886b7c4eb290b9048.pdf
    • https://static.usrfiles.com/ugd/5438e3_6d3d7898237b4b928511b080c3da453b.pdf
    • https://static.usrfiles.com/ugd/90d19e_2be09b6622a04153b3183eba20236067.pdf
    • https://static.usrfiles.com/ugd/f95141_4c811ee15fc547e8978ffa7dc0249aad.pdf
    • https://static.usrfiles.com/ugd/2e79a6_a15408d1c16a4354beab4cd3af3b19ca.pdf
    • https://static.usrfiles.com/ugd/9374a7_c11edf8c598e4e86966343becdaf464f.pdf
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/92204711034.pdf
    • https://cdn.shopify.com/s/files/1/0483/3286/5699/files/jumob.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/42150829543.pdf
    • https://cdn.shopify.com/s/files/1/0439/8999/1582/files/lawebebesoro.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_off00006f00.bin
4181b0e0253e796dd4296c5a8beaee2549c1f1d8f776ddbe8256194f00d32206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F00 5144 bytes
font_01_sfnt_off0000807d.bin
146b4769cc1562cf6ee83824bc01de632c0d744d71e920fe080df021a422843f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x807D 10832 bytes

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