Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ba7ec7a9676228…

MALICIOUS

PDF

39.0 KB Created: 2020-05-22 03:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aef857851595a336f491252c93c2e1cc SHA-1: e8a1902ca4bec79112e165ff58bcc7d0a7a03e36 SHA-256: 93ba7ec7a967622860c50f42bbe81fad95f3737555d03687e83976e81ed06a13
92 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which point to other PDF files hosted on similar domains. The document body explicitly mentions downloading Microsoft Visio, suggesting a lure for potentially unwanted software or malware. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms a pattern of link farming, likely for SEO manipulation or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://juicyscoopobsessed.com/uploads/1/3/0/6/130620407/130620407.html#download+microsoft+visio+2007+full+version
    • http://debbsphotography.com/uploads/1/3/0/6/130621915/5364113.pdf
    • http://fleurdorange.net/uploads/1/3/0/2/130289387/valobup.pdf
    • http://superplumarchitecture.com/uploads/1/3/0/6/130622116/dujiwi-busejuveguberik-nesurepezozov-jurimebepakipi.pdf
    • http://tolauncha1000lips.com/uploads/1/3/0/4/130488396/fisofitaterudun.pdf
    • http://vansrv6a.com/uploads/1/3/0/7/130776865/fa7353e3b505.pdf
    • http://spacetownkicks.com/uploads/1/3/1/4/131452886/5540594.pdf
    • http://lovedogsandhorses.com/uploads/1/3/1/3/131384555/4600920.pdf
    • http://clbookkeeping.com/uploads/1/3/0/5/130590432/3471198.pdf
    • http://dogpath.com/uploads/1/3/0/7/130776180/2885278.pdf
    • http://dbfoodsllc.com/uploads/1/3/0/8/130814252/kewopokutalabanunuwu.pdf
    • http://thedustybunch.com/uploads/1/3/1/4/131482931/1890365.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_off00006101.bin
18e9bb14f3af85261e6a0094c78dad14a9e4199542db91a75bea3a3f6506dfb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 21124 bytes