Malicious PDF — malware analysis report

Static analysis result for SHA-256 8968e6ebefd5276b…

MALICIOUS

PDF

39.1 KB Created: 2020-06-06 03:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 740413d4527c863a7330cb8665e7a6f3 SHA-1: b9df39f8e7fcf1eeb5ccc256b778dae304f3051e SHA-256: 8968e6ebefd5276bfa149a305de3781a7fb6b47b353c3b8ed983f977f9a76151
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body contains a mix of garbled text and URLs, including the primary lure 'http://38k.undesirable.us/uploads/1/3/1/8/131856950/131856950.html#ca%25C3%25A7ador+silencioso+4+lobos+do+pacifi'. This suggests a link farm or SEO poisoning attack designed to direct users to potentially malicious content hosted on these external sites.

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://38k.undesirable.us/uploads/1/3/1/8/131856950/131856950.html#ca%25C3%25A7ador+silencioso+4+lobos+do+pacifi
    • http://ingagellc.net/uploads/1/3/0/6/130605156/60f2a1c577acf1.pdf
    • http://porgrace.com/uploads/1/3/0/7/130739332/21ff59.pdf
    • http://ashleycallon.com/uploads/1/3/0/2/130272361/54a507b2e1.pdf
    • http://wealth-taco.com/uploads/1/3/0/6/130603906/rotekuforejor-wosonerutari.pdf
    • http://mail.livingwhole.net/uploads/1/3/0/6/130604860/9cd1f68f38de.pdf
    • http://38k.undesirable.us/uploads/1/3/1/8/131856950/terms.html
    • http://38k.undesirable.us/uploads/1/3/1/8/131856950/dmca.html
    • http://38k.undesirable.us/uploads/1/3/1/8/131856950/policy.html
    • https://rozedimi.files.wordpress.com/2020/06/92454705977.pdf
    • https://fimesijonoba.files.wordpress.com/2020/06/73003633847.pdf
    • https://suresosupif.files.wordpress.com/2020/06/xozozebikego.pdf
    • https://xupidurodofa.files.wordpress.com/2020/06/82646273942.pdf
    • https://rajebilakot.files.wordpress.com/2020/06/xanajewegire.pdf
    • https://fulivamata.files.wordpress.com/2020/06/48022582880.pdf
    • https://poravev.files.wordpress.com/2020/06/776668320.pdf
    • https://zabalojiji.files.wordpress.com/2020/06/24937852390.pdf
    • https://gixanike.files.wordpress.com/2020/06/dovoweguresizabafu.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_off00006759.bin
116c74b557a97803bf93f7baac5cbd5255232b8e10a4e77cb2107efb160da10e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 13064 bytes

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