Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcd7c701e9ee6cd…

MALICIOUS

PDF

36.5 KB Created: 2020-09-09 16:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03247d84f702e22838efd6bae191b211 SHA-1: 4adfa0cdc06ae9cc3bdfd953dd998a4b7ee2bb93 SHA-256: 3bcd7c701e9ee6cd422f992a98f13e50b73175e415f3a76fdac73b4e8aa40e8a
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links designed to redirect users to various external PDF files, a technique often used for SEO manipulation and to obscure the ultimate malicious destination. One prominent link points to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, contains keywords related to academic content, suggesting a lure to attract victims. 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.ru/wb?keyword=glycolysis%20and%20the%20krebs%20cycle%20pogil%20answers%20pdf
    • http://files.citystylistapp.net/uploads/1/3/1/4/131453733/zanebofixovuwoza.pdf
    • http://files.embroideryequipment.com.au/uploads/1/3/1/4/131437689/tagopidenesos.pdf
    • http://rozeko.artbeatarttherapystudio.com/uploads/1/3/1/4/131437886/seredavej_meruposo_piwujuvi_jibibiruxa.pdf
    • http://zolakopi.skinsationalbylaura.com/uploads/1/3/1/0/131070722/tusatiwepidavulox.pdf
    • http://fuxiwa.lauragambrel.com/uploads/1/3/1/4/131483281/nodegof.pdf
    • https://static.usrfiles.com/ugd/a12125_d1a3e33509454d41a29dc407bdf7c507.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ac059802fc34f08872ac0a45fc587c4.pdf
    • https://static.usrfiles.com/ugd/6a22cb_05cc5aeaaf684d82b2e041d056cdfb76.pdf
    • https://static.usrfiles.com/ugd/a7074a_a3c798443db4449c981002efcf89fe8a.pdf
    • https://static.usrfiles.com/ugd/2ca22b_e112f974c9f34a7a9711ae7aa1d57020.pdf
    • https://static.usrfiles.com/ugd/5b5da7_2522f561435b43c39147694f6a1e5712.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_off00004ecb.bin
5291d09904e71068325c21956c824b19744583ea8f4715db04dc50ac749d33ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECB 5848 bytes
font_01_sfnt_off000062c6.bin
d396b76b05f232adf36597fbeaea1d8ee30e1efa866a0e9a6b36e303cac249a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 10208 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.