Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea0f8bc1e9bcd4c…

MALICIOUS

PDF

43.7 KB Created: 2020-06-07 13:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa67d0a3cf7bcdc131aa0bb85e8cf244 SHA-1: 9eea25cf50ac26f8d157b15747bf3409b18abca5 SHA-256: cea0f8bc1e9bcd4c2b5ac7ebb1ffeb17fd7034652d71a2a1b2a052d13940b7ea
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier and contains a large number of external links, many of which point to PDF files. This suggests a link farm or SEO poisoning tactic, likely intended to redirect users to malicious content or phishing pages. The primary attack pattern involves leveraging these external links to distribute further malicious payloads or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://trulywireless.org/uploads/1/3/1/4/131406736/131406736.html#cordon+off+ngh%25C4%25A9a+l%25C3%25A0+g%25C3%25AC
    • http://webdisk.ridecarousel.com/uploads/1/3/1/3/131383717/nusolo.pdf
    • http://grandbluffrunning.com/uploads/1/3/2/3/132303181/982716.pdf
    • http://rivage.services/uploads/1/3/0/2/130288430/1303105.pdf
    • http://rccxtheory.com/uploads/1/3/1/1/131163725/fugejetagibo_vasugezagifu.pdf
    • http://hostmaster.katthuis.be/uploads/1/3/0/5/130551155/bonirudixijav-lorekijusuvobax-mojefu-rozadonekuvi.pdf
    • http://nabeelreviews.com/uploads/1/3/0/5/130590588/2944838.pdf
    • http://fortheloveofriding.com/uploads/1/3/0/2/130289353/b4459c62.pdf
    • http://candle-licious.net/uploads/1/3/0/4/130476503/f92b0ee89c1.pdf
    • https://pajiwilojex.files.wordpress.com/2020/06/dunelupovurofipuzo.pdf
    • https://tirafeb.files.wordpress.com/2020/06/12908745514.pdf
    • https://rokipes.files.wordpress.com/2020/06/89103429094.pdf
    • https://rabadudi735864872.files.wordpress.com/2020/06/jumavipapofupatigizeruzar.pdf
    • https://bujimuvexage.files.wordpress.com/2020/06/17420958512.pdf
    • https://gefanopo.files.wordpress.com/2020/06/38046098333.pdf
    • https://wisixabapux.files.wordpress.com/2020/06/guvajuwonorozeb.pdf
    • https://kujigeder.files.wordpress.com/2020/06/tiwobab.pdf
    • https://muvusegomi.files.wordpress.com/2020/06/2044746931.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f68.bin
67345d40aeee9bf9d60d2378fd1320854a2add000e2de4bf2b936166b4b97bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F68 23392 bytes

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