Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b9e742a1b978cd…

MALICIOUS

PDF

134.6 KB Created: 2020-04-06 09:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5b94161c91fd90458cb69048946f8df7 SHA-1: 5f92c607e8630c949115bf6bf5f14486df7cfded SHA-256: a2b9e742a1b978cdf334f72ce6f5f15c0e6f60da5a7db4df20570038e447cfa0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation. One of the embedded URLs, 'http://blueharbour.org/uploads/1/3/1/4/131437370/131437370.html#waiting+for+godot+as+a+religious+play+pdf', is presented as the document's content, likely to deceive users into clicking through to malicious sites. No scripts were extracted from this sample.

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://blueharbour.org/uploads/1/3/1/4/131437370/131437370.html#waiting+for+godot+as+a+religious+play+pdf
    • http://downthecreekdesign.com/uploads/1/3/0/2/130288444/zapazogukeletubevev.pdf
    • http://kyautismplayproject.com/uploads/1/3/1/3/131383681/40a74.pdf
    • http://mayberryberners.com/uploads/1/3/0/6/130620280/nanuzosijefiw.pdf
    • http://topthreespots.com/uploads/1/3/0/7/130740498/mijizat_sumusojizukar.pdf
    • http://nakomaplumas.com/uploads/1/3/1/1/131164054/ab31ffa374.pdf
    • http://dqwoiq.com/uploads/1/3/0/6/130621985/4ecd11bccf62e1.pdf
    • http://idacanart.com/uploads/1/3/0/5/130551063/dofofenuv.pdf
    • http://kymmiskk.com/uploads/1/3/0/6/130604952/5547f53cb523c0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c75c.bin
332ab6d9a3232965674a6aceeed5165c2400d6b8ac2e6d47542d46959883b3c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C75C 11136 bytes
font_01_sfnt_off0001eba5.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EBA5 2616 bytes
font_02_sfnt_off0001f4d9.bin
e587c78e460ca01d097e41bcdc5778a9edfdde81871e5109e3e9a0d34562e683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F4D9 16600 bytes

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