Malicious PDF — malware analysis report

Static analysis result for SHA-256 2242cc40ba85abb6…

MALICIOUS

PDF

32.7 KB Created: 2020-08-15 00:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c8f0e40e2e2482b5d71970f06abf040 SHA-1: 9fb147ca6be2721609d8f57376dd0a524faebfbd SHA-256: 2242cc40ba85abb6d8ad22fa7b575bec878d6f906a1dce4015873266f1f61700
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary lure appears to be a 'Pioneer ddj-sr manual', which is likely a pretext to entice users into clicking the malicious link. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

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/wb?keyword=pioneer%20ddj-sr%20manual
    • http://files.swissornaments.com/uploads/1/3/0/9/130969489/5733543.pdf
    • http://files.azzydoon.com/uploads/1/3/1/3/131380600/7955934.pdf
    • http://files.hollytilley.com/uploads/1/3/0/7/130775027/tupojafiwa-fifamunodovol-wusabositoz-fatavit.pdf
    • http://files.caricaturedubai.com/uploads/1/3/1/3/131378990/3751795.pdf
    • https://cdn.shopify.com/s/files/1/0430/6980/0597/files/fikakidag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2496/3990/files/manual_tire_changer_harbor_freight.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/amumu_support_build.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/giteta.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/benamoxujozotiselefomox.pdf
    • https://cdn.shopify.com/s/files/1/0438/6121/3344/files/zazebuxekuxata.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/wozaxefe.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_off000042f0.bin
c360a353c8c5720f1fa5530ea20e0434efd2140b5011b6c9e6d9e241c016cca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42F0 5080 bytes
font_01_sfnt_off00005421.bin
9bac292fe079591bff04ce612ee900e6dd225c3c561668a4099533454c3798c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5421 10244 bytes

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