Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a023a33992e782e…

MALICIOUS

PDF

35.5 KB Created: 2020-08-18 20:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2a2c229814cf0f4adc9595b8798ef1f SHA-1: 51244e0484048b532b94082c84674644962349c8 SHA-256: 1a023a33992e782efcd392324d5a4c82a324346b745d072d2d2d03b0d42d7ab8
150 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.com/pify?keyword=bahubali+dj+songs+telugu+videos'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer the attack pattern.

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=bahubali+dj+songs+telugu+videos
    • http://rotinav.guitarelegance.com/uploads/1/3/1/4/131438096/05e093.pdf
    • http://mejozeke.redflagpoetry.com/uploads/1/3/1/4/131437919/7174391.pdf
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • http://fosawenu.cantyschool.org/uploads/1/3/1/4/131406153/velos.pdf
    • http://files.kristinehanson.design/uploads/1/3/1/3/131383998/dd1e7b1405c.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/car_battery_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/dosavosoxogenuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/90083154845.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/22794757131.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/21302375475.pdf
    • https://cdn.shopify.com/s/files/1/0453/8669/4824/files/calligraphy_fonts_style.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/ponotetusubazozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/basexalelarekudatawizise.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/53533742268.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/37430189539.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_off00004542.bin
3c5abb5a806bc8b46b6497b18cf3047f11f5be9071fde5ee9481899385dcd1b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4542 5316 bytes
font_01_sfnt_off00005752.bin
52e420e8aaea52a35cc85e68f5a7b1e5d7212d18402e3f53fe820200ad399a28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5752 13572 bytes

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