Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a1dad00a2568940…

MALICIOUS

PDF

42.9 KB Created: 2020-04-05 04:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6e38294b6b187625c5a97b08a25d3c44 SHA-1: 551e675dd830be7d84c115c8057d6bcf33abce3a SHA-256: 8a1dad00a256894080bed015798348e2be12844f787858fde16809c712377290
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes a URL that points to a collection of other PDF files. This suggests the primary purpose is to redirect users to a link farm, potentially for SEO manipulation or to distribute further malicious content. 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://creativeranddconstruction.com/uploads/1/3/1/0/131071288/131071288.html#ca+short+form+540nr+instructions+2018
    • http://kreatewithkatz.org/uploads/1/3/1/3/131379384/ed587c.pdf
    • http://kalamazoocornhole.com/uploads/1/3/0/7/130775776/guweru-muwazir-pubetozam-nezudefa.pdf
    • http://lechiclubbock.com/uploads/1/3/0/6/130639851/zejebifap_bamiz.pdf
    • http://memorialdesignerbodysculpting.com/uploads/1/3/0/2/130271009/01273.pdf
    • http://austintexasevents.com/uploads/1/3/0/7/130740483/6332375.pdf
    • http://acunifiedyouthconsortium.com/uploads/1/3/0/9/130968947/zesekiwadigugajut.pdf
    • http://raquelmusic.net/uploads/1/3/0/7/130776211/doxavisenelefed.pdf
    • http://lailomacouture.com/uploads/1/3/0/6/130621382/rezasipiwo.pdf
    • http://dallal.info/uploads/1/3/0/8/130813869/10308ebe.pdf
    • http://bbsoundandlighting.com/uploads/1/3/0/3/130313088/pezapuxufofebivewolu.pdf
    • http://alamomidcentury.com/uploads/1/3/0/2/130291939/musisazapifuri.pdf
    • http://primitivesandco.com/uploads/1/3/0/6/130605516/9614575.pdf
    • http://bibbitybobbityballoons.com/uploads/1/3/1/1/131163914/2758441.pdf
    • http://katbirdseat.com/uploads/1/3/0/6/130639622/lodixu_dipizalixab.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006976.bin
82cb80b56e75395d4d9deec7fc4f399b857edd6a151e49ea686e156d228430b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6976 8180 bytes
font_01_sfnt_off00008966.bin
2cd95236efb946736b2b57a5db8173a89213b1323bee00b1f4116f49993fdb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8966 16040 bytes

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