Malicious PDF — malware analysis report

Static analysis result for SHA-256 55cfa43bef191a6b…

MALICIOUS

PDF

32.9 KB Created: 2020-05-17 03:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6011e3405399284920ddba11d4e9f66 SHA-1: 2e50ee00d15ddaa24c5eb69611047f167baffeae SHA-256: 55cfa43bef191a6b9164e2e2592a176c1cd710532f24b237681ea2ba74b8fbfe
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically slugged, indicating a link farm or SEO scam. The document body mentions 'Warcraft 3 from blizzard', likely a lure to attract clicks to these external URLs. No scripts were extracted, and the primary malicious activity appears to be directing users to potentially harmful websites.

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://kreativekidsworld.com/uploads/1/3/0/7/130775186/130775186.html#warcraft+3+from+blizzard
    • http://redshiftcider.com/uploads/1/3/0/4/130490774/romefi.pdf
    • http://bluestockpm.com/uploads/1/3/0/5/130588531/vunozosevo.pdf
    • http://careneeds.org/uploads/1/3/0/4/130436362/zufibana-dusomede-taladaguvekipa.pdf
    • http://geniusdietpills.net/uploads/1/3/0/4/130494478/1f490ff.pdf
    • http://giantvalleyfarm.com/uploads/1/3/0/5/130589135/8294080.pdf
    • http://newrulesamerica.org/uploads/1/3/1/4/131406798/c0ea278ed26c.pdf
    • http://sencares.org/uploads/1/3/0/5/130539125/15570ae5d97668.pdf
    • http://theclaytonridgeteacher.com/uploads/1/3/0/8/130874085/wefilu.pdf
    • http://myuntoldpleasures.com/uploads/1/3/0/9/130969231/widemakevev.pdf
    • http://effectivebackpainrelief.com/uploads/1/3/0/5/130588505/3ab109.pdf
    • http://cannamountaincbd.ca/uploads/1/3/0/3/130324419/1c4ea00ec3.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_off00005605.bin
a2bcb20f57692ac85aec74b085525bf5303d1af8386fc836857a77355e5c744d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5605 10192 bytes

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