Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdf66c742a06875…

MALICIOUS

PDF

38.9 KB Created: 2020-04-04 09:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6d74b0742a8baebefcc8d6458ab3f4e5 SHA-1: 7a822ad20d7f6c8d36554d6da8ce3ec028e81ae3 SHA-256: 1bdf66c742a06875378587a5ee5c1974b42b4859e988cabd74bf7d5cac50ab91
70 Risk Score

Malware Insights

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

The PDF contains numerous external links to other PDFs, a technique often used for SEO poisoning or to host malicious content. The document body, though heavily obfuscated, contains text suggesting it is a 'Genuino zero datasheet', likely a lure to encourage downloads. The presence of a 'Visual download / call-to-action button lure' heuristic further supports this. The primary IOCs are the numerous external URLs pointing to potentially malicious PDF files.

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://chuzhappy.com/uploads/1/3/1/4/131437932/131437932.html#genuino+zero+datasheet
    • http://hammondeventcenter.com/uploads/1/3/1/0/131071286/fudidebakorepumet.pdf
    • http://epicshotsphotographyny.com/uploads/1/3/0/8/130814292/similute.pdf
    • http://undergroundwellness.net/uploads/1/3/0/8/130815192/7037990.pdf
    • http://thekingdommc.net/uploads/1/3/0/4/130478484/9511326.pdf
    • http://redsg.org/uploads/1/3/1/4/131438579/9984641.pdf
    • http://myretirementmentor.com/uploads/1/3/0/8/130813966/sofazaneg.pdf
    • http://drakebettis.com/uploads/1/3/0/7/130775831/xanipalapulitativow.pdf
    • http://researchlearningcommunities.org/uploads/1/3/1/3/131382395/8829489.pdf
    • http://peachstate.biz/uploads/1/3/0/4/130483265/gedimuz_wubirag_vifinikaw_fizurad.pdf
    • http://greengolandscaping.com/uploads/1/3/0/7/130740151/jirededefu-fifixoxek.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_off00006fc6.bin
13ea896f8956f94b2cd984b64542d60a42e15cde9112ba4cc5810ff62ba52bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC6 8036 bytes

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