Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57becc1fc110b12…

MALICIOUS

PDF

54.1 KB Created: 2020-08-14 14:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abeadcdaed791fa4eea4bb844c9fee6 SHA-1: 5679df482a4166553b15e5d982b7df26ce1c98bb SHA-256: c57becc1fc110b12192487b6531e75e4eec2c008074c9c8d70ad3898753d573a
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to potentially malicious redirectors or unknown domains. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/wb?keyword=preaching%20about%20prayer%20pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick the user into clicking the link. No scripts were extracted, and the PDF structure itself does not indicate further exploitation beyond the redirection.

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.cc/wb?keyword=preaching%20about%20prayer%20pdf
    • http://paxig.vanaudelanalytix.com/uploads/1/3/0/7/130776299/4a9e6cd.pdf
    • http://files.courtneytravels.blog/uploads/1/3/1/4/131437295/6170751.pdf
    • http://firitu.paulaingeneva.com/uploads/1/3/0/8/130813108/112d1e.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/fanofa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3172/2141/files/1021569224.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6256/files/zisimafezepodujovajevi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/48198739782.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/nupozuveka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0441/2270/1976/files/30491988086.pdf
    • https://cdn.shopify.com/s/files/1/0429/1841/2451/files/how_to_clear_a_discord_chat.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/63272648011.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/sijelosuwafotutiwulipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/algebra_1_worksheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088c0.bin
f85da69000921cfce940f028d7fc34d0568b960cee64e2f4287fbcb7b035a562		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C0 5332 bytes
font_01_sfnt_off00009ad1.bin
a9488391f64e8312f1084140e37d9cad2fd2ab5f5830fd450024d8a4549e63ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD1 10088 bytes
font_02_sfnt_off0000bd44.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD44 4324 bytes

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