Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6677fe13494dad…

MALICIOUS

PDF

39.2 KB Created: 2020-06-04 18:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01088fa3c3ed9713d792fadcad82a281 SHA-1: 23bdb936af260a5e0c00fc8470c52f86af4a2dbe SHA-256: de6677fe13494dadfdb6e8a72077f48594d13e7663b1c37ea8754a6c70bea430
70 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a PDF SEO link farm. The document body, though heavily obfuscated, contains embedded URLs that likely serve as lures. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into clicking a link. The primary intent appears to be directing users to a network of linked PDF files hosted on various domains, potentially for malicious content delivery or phishing.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://suddendeaf.com/uploads/1/3/1/4/131406676/131406676.html#join+mp3+files
    • http://ls1counselling.com/uploads/1/3/1/8/131857334/dezebis.pdf
    • http://firstratepos.org/uploads/1/3/1/0/131071277/kesujubuma_posofebe_tipugogapukufi.pdf
    • http://a.catholiccharitiesvc.org/uploads/1/3/0/5/130550790/959e0fd.pdf
    • http://picaresquepress.com/uploads/1/3/0/7/130774993/9f2c6dbc1b.pdf
    • http://breakfreeandbreathe.com/uploads/1/3/1/0/131069750/taxif.pdf
    • http://goldcoproperty.com/uploads/1/3/0/7/130776388/maxipologozima.pdf
    • http://millerschoolmaster.com/uploads/1/3/0/5/130589171/8120390.pdf
    • http://especialgenius.org/uploads/1/3/0/8/130814534/8846694.pdf
    • http://suddendeaf.com/uploads/1/3/1/4/131406676/terms.html
    • http://suddendeaf.com/uploads/1/3/1/4/131406676/dmca.html
    • http://suddendeaf.com/uploads/1/3/1/4/131406676/policy.html
    • https://miwegakumu.files.wordpress.com/2020/06/46479730308.pdf
    • https://sigawogigo.files.wordpress.com/2020/06/58331685346.pdf
    • https://winizoz.files.wordpress.com/2020/06/podukelibidil.pdf
    • https://tezoduwob.files.wordpress.com/2020/06/vunamirapoduzosa.pdf
    • https://likoxodafan39484776.files.wordpress.com/2020/06/fijiwarigebotaguzumijiri.pdf
    • https://kiwunagumif.files.wordpress.com/2020/06/dikilatodeba.pdf
    • https://nufovax.files.wordpress.com/2020/06/8599833781.pdf
    • https://jededoxi.files.wordpress.com/2020/06/vagirer.pdf
    • https://gujobuzagam594322867.files.wordpress.com/2020/06/87651991085.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_off00006d32.bin
4cc1a97c40bc893864178ba6593f7c1f6e516e99e3a18cc0336f47ffc988327d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D32 10388 bytes

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