Malicious PDF — malware analysis report

Static analysis result for SHA-256 85bba0acf94041c4…

MALICIOUS

PDF

49.3 KB Created: 2020-07-28 12:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 067fe6eb657371f88b5b5cd30f728ed8 SHA-1: 1ccc1016d7baa04b1538618e017b4c5e49039d1b SHA-256: 85bba0acf94041c4e533b8aeb9fa1ecf25f29b4c44a544bdff63479e22e8b270
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of embedded links and the heuristic firings suggest a lure to malicious websites, likely for phishing or to download further payloads.

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.cc/pify?keyword=cancer+de+pulmon+definicion+pdf
    • http://files.cedartreeproject.com/uploads/1/3/0/7/130738704/vidurilim-lowopow.pdf
    • http://files.elljaydesign.com/uploads/1/3/1/3/131380771/2023585.pdf
    • http://files.riccijustisart.com/uploads/1/3/1/3/131384281/sasavukug-pabeba-xoropozoxaxog-getirakud.pdf
    • http://files.semmuna.org/uploads/1/3/1/0/131070526/vugegox_milenorener_mufize_dagejelelexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/vulujodefabogozataki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdf
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/77832769939.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/pomoxorukinaforidefelun.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/16478280432.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/35821136024.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/37188369903.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/46327043170.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/4109542898.pdf
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/pagitekenomivazodokesan.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/30715534983.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/vewixokivatuw.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008434.bin
66c8e6ced3560f31e29118fdc13eaa8cca856eb07da777e84f29cc2ac96e4c02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8434 4948 bytes
font_01_sfnt_off000094ea.bin
fdd74495e4b662c8fcf4287009f11070107fd06d7e9b1a852c24a118a46421d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94EA 10328 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.