Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3850dafaec3bc8…

MALICIOUS

PDF

28.9 KB Created: 2020-03-24 03:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 82de4db730dbcfbb8ab3289441e46990 SHA-1: 1ebd00ab1391572deb1707c9fff40a46c6a91654 SHA-256: fb3850dafaec3bc865661b7784a96ddfa7aa20d173ed6da55e7eca07c7ea57bd
82 Risk Score

Malware Insights

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

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains numerous external links, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains a URL that points to a potentially malicious HTML file. No scripts were extracted from this sample, limiting further analysis of its direct payload.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 28 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://floralfaeriedesigns.com/uploads/1/3/0/7/130739446/130739446.html#diary+of+a+wimpy+kid+the+meltdown+game+y8
    • http://derekhoshiko.com/uploads/1/3/0/6/130620474/653870.pdf
    • http://bearfruitsbaskets.com/uploads/1/3/0/2/130289571/bizedupuliza.pdf
    • http://breakingruleswritingcompetitions.com/uploads/1/3/0/7/130739132/rajonodaxojiwi_torikopi_zazividipora_refig.pdf
    • http://greenbambino.co.uk/uploads/1/3/0/8/130813899/7621911.pdf
    • http://plumsteadhome.com/uploads/1/3/0/5/130545800/befosam.pdf
    • http://www.evangelismfireministries.com.au/uploads/1/3/0/8/130874043/tupibemizizin_xadifasakeb_ripat_rafuvuxifo.pdf
    • http://synergyassistllc.com/uploads/1/3/1/1/131163927/7597676.pdf
    • http://centrallyesl.com/uploads/1/3/0/7/130775845/titif.pdf
    • http://admin.premierdoorservices.co.uk/uploads/1/3/0/3/130313069/gomiwa-dasezofefope-waputi.pdf
    • http://handymanservicesofwny.com/uploads/1/3/0/2/130272925/3877998.pdf
    • http://giftgaff.org/uploads/1/3/0/7/130739878/c2cfe6ef652b2c.pdf
    • http://mta-sts.mail.fredrikforslund.com/uploads/1/3/0/7/130738738/262a0950f5.pdf
    • http://betteraudiovisual.com/uploads/1/3/0/7/130739500/pexitiguj-fufuledaruvo-jenulorokedavos.pdf
    • http://jonesgeneralscience.com/uploads/1/3/0/2/130291355/dobumigatuja-repedivadif.pdf
    • http://vidyo.akics.org/uploads/1/3/0/2/130287896/be74028e.pdf
    • http://dewarasjayasdnbhd.com/uploads/1/3/0/7/130738633/be2daf78a1.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_off00005206.bin
25a24daed5fcb80b4ac3eb2544b4fd0244d89d520c9ffb987b6e8559e1626a6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5206 4852 bytes