Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f284ff6abb73b6e…

MALICIOUS

PDF

45.1 KB Created: 2020-08-07 07:36:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a6303b8457e96933c52e6efb18b1c1d SHA-1: 589f57d37f8630006ecc5c92e3dd80e7afc831ec SHA-256: 2f284ff6abb73b6e35e83d7c0667ad6db2660822646055464daa40d5329ea817
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, suggesting a lure to download further malicious content or visit a malicious site.

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=statistical+language+learning+pdf
    • http://files.stmartindp.com/uploads/1/3/1/4/131453871/8814061.pdf
    • http://files.jeremymichaelgeorge.com/uploads/1/3/0/7/130740573/df1c9bea8.pdf
    • http://ravirizok.clermontlawnservice.com/uploads/1/3/2/7/132740892/lileleduxe_mazaxepunure_lovegila_kamarajuvalik.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/satoshi_mines_bot.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2717/files/zepumobarejaxipowivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/virijuzexiwofewaluduvot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/40437395839.pdf
    • https://cdn.shopify.com/s/files/1/0431/3274/7927/files/97322160198.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/nebajezaxiduzusat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/gakosi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/topulivederapatuxanoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5261/files/71816693546.pdf
    • https://cdn.shopify.com/s/files/1/0440/6290/0374/files/berkeley_sportfishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/4272711802.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/26368287031.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/44976690009.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_off000070c2.bin
3e86c7a15627213873bbe076e64316e0825b9dae6aa48ffc6c65d4c6858140a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C2 5424 bytes
font_01_sfnt_off00008344.bin
c957ade6ec37f442dba2283dc44d6163580a46c2a6e6813b4925bf4804e2a694		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8344 10616 bytes

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