Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb996e325c781d18…

MALICIOUS

PDF

43.3 KB Created: 2020-05-16 20:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d2528eba76c2be2ee1c11ec759dfcd SHA-1: cc2abb159dad16846ec2ce366a78821254c145d3 SHA-256: bb996e325c781d1859c504f79e6606d831fd512f8a95158f006f46d111b5be6f
92 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body contains text related to 'Guitar tab template notepad' and metadata indicating it was generated by wkhtmltopdf, suggesting a potential lure or SEO spam tactic. The primary attack pattern involves directing users to a network of external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://blackhawbuilders.com/uploads/1/3/0/7/130775507/130775507.html#guitar+tab+template+notepad
    • http://pfafftimbergroup.com/uploads/1/3/0/5/130543006/35a52121.pdf
    • http://mykhalid.com/uploads/1/3/0/5/130588280/tososapufuvu.pdf
    • http://biglybigly.com/uploads/1/3/0/5/130590443/5956316.pdf
    • http://gozelda.net/uploads/1/3/0/5/130590180/6fcc0dac58ee8.pdf
    • http://massagebyfidel.com/uploads/1/3/0/6/130605112/9425928.pdf
    • http://quedcard.com/uploads/1/3/0/8/130814763/fitazuvusiwosopani.pdf
    • http://100lifelessonswithsistergirl.com/uploads/1/3/0/5/130590458/rikekupagobetodalil.pdf
    • http://hannapachman.org/uploads/1/3/0/6/130621826/xinidarowamak.pdf
    • http://35dollar-tickets.com/uploads/1/3/0/5/130590371/f12184bd8e35d.pdf
    • http://harmoniquewinds.com/uploads/1/3/0/4/130435891/5e9c5956b.pdf
    • http://thegooroogroup.com/uploads/1/3/1/4/131482957/74aaee8db67c58.pdf
    • http://mattressdiscountstore.net/uploads/1/3/0/5/130589286/b98956.pdf
    • http://njoylifecoaching.com/uploads/1/3/1/3/131378779/miviva.pdf
    • http://urbanhealthpath.com/uploads/1/3/1/4/131483068/somapi.pdf
    • http://shannonfoleyart.com/uploads/1/3/1/1/131164488/juxelofaxefobox.pdf
    • http://paloaltointerventionaloncology.com/uploads/1/3/1/3/131398246/jitulov.pdf
    • http://fredshield.com/uploads/1/3/1/4/131437094/285c50c1d3.pdf
    • http://firstpressiloam.com/uploads/1/3/0/2/130288577/joxedikosimefuna.pdf
    • http://scentsybyteilla.com/uploads/1/3/0/7/130776060/7662132.pdf
    • http://eastbaybirthcollective.com/uploads/1/3/0/7/130740357/sitokedotafodi_zirikusilew_tubivibawa_dujuw.pdf
    • http://fedemango.com/uploads/1/3/0/9/130969748/menebid_nukuxajak_xopexurafoj.pdf
    • http://sixtyfirstsat60.com/uploads/1/3/0/6/130621527/nawurilal-befejidobali.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_off00007879.bin
1de7e42f2e487cec03b86e94f8dab257b51eab73980eb280bae64dc06da2f29c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7879 12072 bytes

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