Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad43f20c5b99a47e…

MALICIOUS

PDF

35.5 KB Created: 2020-04-15 23:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7060822c518bda7eff0072f7b908e2d9 SHA-1: c4d164c5a46d8ab854aaef386c2c711ab1431333 SHA-256: ad43f20c5b99a47ebd5c4fb7ff12a611425114e6cd204101a09029b1e28cbf42
62 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. The document body, though heavily obfuscated, also contains a URL that matches one of the extracted links. This suggests the primary purpose is to act as a link farm, potentially for SEO manipulation or to distribute further malicious payloads via the linked PDFs.

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://elizabethbrophy.com/uploads/1/3/0/2/130288439/130288439.html#fraction+wall+template
    • http://fireselkiecreations.com/uploads/1/3/0/2/130273589/folujadudujuxazu.pdf
    • http://moongsushi.online/uploads/1/3/0/6/130604009/34c78a.pdf
    • http://norfolkeventmedicalservices.com/uploads/1/3/0/6/130604022/dilavizoloxozewag.pdf
    • http://noahsrainbows.com/uploads/1/3/0/5/130543366/fenetaf.pdf
    • http://innerandouterlabyrinth.org/uploads/1/3/1/3/131379045/34f13f12.pdf
    • http://gayinstigator.com/uploads/1/3/0/4/130489437/semejodulo_movokipekukoz_bojixijanir.pdf
    • http://pamjarts.com/uploads/1/3/0/6/130604522/1308102.pdf
    • http://nwwinetasting.com/uploads/1/3/1/4/131408849/koxudadatave-puvav-daboniga.pdf
    • http://keithdirvine.com/uploads/1/3/0/5/130550683/6213582.pdf
    • http://turnupyourlight.com/uploads/1/3/0/5/130588885/ef21253eb.pdf
    • http://usahandwriting.com/uploads/1/3/1/1/131164472/kidogosegejep_zoliduwu_rusil_teruwuxe.pdf
    • http://activateonline.org/uploads/1/3/0/8/130814052/013a6ee65651b.pdf
    • http://pas-i.nl/uploads/1/3/0/5/130588957/bf5e69e6.pdf
    • http://usahandwriting.com/uploads/1/3/1/1/131164472/kidogosegejep_zoliduwu_rusil_ter
    • 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_off00006078.bin
19252bae3b736e26d684a573f9ac5a96c1a77118e534c4ec220af2b7ce1d129b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 8328 bytes

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