Malicious PDF — malware analysis report

Static analysis result for SHA-256 451444323a535e64…

MALICIOUS

PDF

42.1 KB Created: 2020-03-26 07:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bfa141e9a42001b89746fb10f6a88768 SHA-1: afdd9d12af66d083d95cf1eeabba37fa82e00736 SHA-256: 451444323a535e6482049c04acbb35c16dc9b55cff6ebeb977d5346771f20291
92 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, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body itself is largely unreadable, but the presence of numerous URLs points to a likely redirection or phishing attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://northernrailleaders.com/uploads/1/3/0/9/130968961/130968961.html#que+es+un+estudio+de+caso+en+metodologia+dela+investigacion
    • http://www.taylerwade.com/uploads/1/3/0/6/130605515/ruwugenapuduk.pdf
    • http://www.henry-liu.com/uploads/1/3/0/4/130476844/8d9a1c8f9c4c946.pdf
    • http://amazingpuppiesgarden.com/uploads/1/3/0/7/130776327/tetapotutaj.pdf
    • http://juriga.net/uploads/1/3/0/6/130620631/kafofabot-favemon-badigasubitete.pdf
    • http://findapig.com/uploads/1/3/0/2/130272586/pabifu-rapeziwibox-vaxajema.pdf
    • http://lostsockdesigns.com/uploads/1/3/0/6/130620605/tuvuturikafazefigo.pdf
    • http://californiandeli.org/uploads/1/3/0/6/130639477/kemukat.pdf
    • http://www.molly-d-risd.org/uploads/1/3/0/5/130551339/1401598.pdf
    • http://carrollcountydentistry.com/uploads/1/3/0/3/130379065/jusok-batajalozenik.pdf
    • http://www.kittencat.org/uploads/1/3/0/2/130288386/6413920.pdf
    • http://youth4youthnc.com/uploads/1/3/0/7/130739373/2260870.pdf
    • http://recommendu.com/uploads/1/3/0/7/130775156/tiradokenojoladiwapo.pdf
    • http://floresbakehaus.com/uploads/1/3/0/6/130639305/9994901.pdf
    • http://artbyvivi.com/uploads/1/3/0/5/130543816/c1f8eb385cfbb.pdf
    • http://deas-guyz.com/uploads/1/3/0/2/130272275/rolugimije.pdf
    • http://suenodelunadepapel.com/uploads/1/3/0/3/130379769/7112767.pdf
    • http://bestvehiclesforsale.com/uploads/1/3/0/5/130539107/50ae01058.pdf
    • http://edsoncustomcruisers.com/uploads/1/3/0/2/130289274/2474769.pdf
    • http://bergeyjewelryww.com/uploads/1/3/0/4/130488288/bojozajufumipedor.pdf
    • http://mdesignbymarsha.com/uploads/1/3/0/7/130776218/18145cf43c7.pdf
    • http://mail.estudiolandarch.com/uploads/1/3/0/6/130620274/gamiwole_vububina.pdf
    • http://leilanisheart.com/uploads/1/3/0/5/130539204/lumelawajifo.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_off00007907.bin
e17b4eec0e9295298586c10effa85a94a88d595dcf670473d85915c1e9a6feed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7907 8536 bytes

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