Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01a8b712e16d02f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-12 16:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a286255a3453fabd70da7d2631256a5a SHA-1: cc6aeac54dcd23ab243e17715a6250c3eeadce39 SHA-256: c01a8b712e16d02f64f53e6e114e9899f837f1d955cbd0fee5c1e6b63bef0370
150 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to Shopify domains, but one critical link redirects through ttraff.com. This indicates a link farm designed to obscure the ultimate destination, likely a phishing site or malware download. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=amazon+web+services+tutorial+pdf
    • http://files.yogaforkidsportland.com/uploads/1/3/0/7/130775310/8614018.pdf
    • http://files.fabricd.com/uploads/1/3/0/7/130740149/5039606.pdf
    • http://puvaved.rebelsinstereo.com/uploads/1/3/0/7/130738732/e1387a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55497749658.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4893/files/2927489505.pdf
    • https://cdn.shopify.com/s/files/1/0433/5632/3995/files/nedusivixuruv.pdf
    • https://cdn.shopify.com/s/files/1/0443/3071/3244/files/les_adjectifs_possessifs_en_franais_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0435/5057/2695/files/86414827008.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/asme_y14._5_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0449/1870/2235/files/70682505103.pdf
    • https://cdn.shopify.com/s/files/1/0436/3150/9664/files/reneruzi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/asme_y14._5_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1456/files/avesta_espaol.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_off00005fe5.bin
fb93fdc4cc5affff381cd866260a11b9876e781b37d1970d1981821d80616664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 5632 bytes
font_01_sfnt_off00007305.bin
71eaa954477f7fa049893f786a126915b4065ff8f832b8dcad42964dac8ef29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 10324 bytes

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