Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f77e427bb509ca…

MALICIOUS

PDF

40.9 KB Created: 2020-08-10 16:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9813e12da7f279e7df9741ba169865f4 SHA-1: a7b0543315c1c5ee4767ac213828ba9218bbc7bc SHA-256: d7f77e427bb509ca4d30fcd8c60206b0deb35e2f8118c9c6541e2073f8570bc1
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, with one critical heuristic firing indicating it's a malicious redirector. Another critical heuristic identified it as a PDF link farm, suggesting a potential SEO manipulation or redirection scheme. The primary malicious URL identified is https://ttraff.com/pify?keyword=advantages+of+value+chain+analysis+pdf, which is likely used to redirect users to further malicious content or phishing sites.

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=advantages+of+value+chain+analysis+pdf
    • http://files.pimaboutique.com/uploads/1/3/1/6/131606490/3491662.pdf
    • http://luniboxu.forexmanagement.net/uploads/1/3/0/8/130873851/budutofiburokezux.pdf
    • http://tepuged.gatewoodgraphics.com/uploads/1/3/1/4/131438405/5219489.pdf
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/what_are_generics_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/kigepagab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/mibakuzimaxe.pdf
    • https://cdn.shopify.com/s/files/1/0436/8872/2597/files/letujeruvazabivinome.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/class_12_english_deep_water.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/seating_arrangement.pdf
    • https://cdn.shopify.com/s/files/1/0440/3786/5637/files/fopezagotifiwamojadilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7520/files/17024254384.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/download_adobe_reader_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/punozolemuvo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5102/2501/files/62431878982.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_off00005ffe.bin
cc30642c028da9675ae6b5f654ae3b1f2435442307102b9618d2e2bd738f8bff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFE 5472 bytes
font_01_sfnt_off000072ae.bin
c94e67e0ed249693de5180350e9131f9421b01e34ef5c4486fb50dc2c3f804b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AE 10528 bytes

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