Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d762c201fb58be…

MALICIOUS

PDF

40.5 KB Created: 2020-03-29 07:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3d0730904d22a9c856a692b8b36e1d15 SHA-1: 0ae312bbe4357dde8f5ef8dc072eebc4c6244619 SHA-256: b0d762c201fb58bef72c9b2519a95a1c795bb5681daddadf190aed39878bba99
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The document body itself contains text related to 'division de polinomios' which appears to be a lure to disguise the malicious intent. 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://princess-crown.lucky1st.com/uploads/1/3/0/4/130477009/130477009.html#division+de+polinomios+definicion+y+ejemplos
    • http://www.sallyshaw.com.au/uploads/1/3/0/6/130621788/gabanawago-zudenakosugo-godagumopokiv.pdf
    • http://floresconrocio.com/uploads/1/3/1/3/131378780/9a0c7ea804daa.pdf
    • http://rokuhispano.com/uploads/1/3/0/7/130738855/6342262.pdf
    • http://affilika.com/uploads/1/3/0/6/130620798/filivigit.pdf
    • http://�refam.dk/uploads/1/3/0/4/130478520/telafeji-vanijopuron-pufikotasunomo-mofifokabikenis.pdf
    • http://host37.carmichaelnl.com/uploads/1/3/1/3/131381706/5764058.pdf
    • http://onewomansperspective.com/uploads/1/3/0/5/130541131/zomafexikelavu.pdf
    • http://shalominc.net/uploads/1/3/0/4/130477829/tupuluditula.pdf
    • http://sacraflora.com/uploads/1/3/0/2/130287506/6399133.pdf
    • http://my-complexion.com/uploads/1/3/0/9/130969598/jaket-vufep-lofufu.pdf
    • http://marinaagassitravel.com/uploads/1/3/0/7/130774964/weborebuv_loxagub_sefet.pdf
    • http://www.clungreenman.org/uploads/1/3/1/1/131163505/xekebasep_nokexavifad.pdf
    • http://youngisraelnmb.org/uploads/1/3/0/7/130776063/6662544.pdf
    • http://bigd401k.com/uploads/1/3/0/2/130287737/redonokulodevupef.pdf
    • http://barbariancrossfit.com/uploads/1/3/0/2/130272921/b9ad449e1.pdf
    • http://dlpcustom.com/uploads/1/3/0/8/130874282/4941553.pdf
    • http://mazagrow.com/uploads/1/3/0/4/130476514/jobagujobiresul-nusoketoxuzuwa.pdf
    • http://mirrorimagemissions.com/uploads/1/3/0/2/130288492/5364354.pdf
    • http://gawsmith.dss.ucdavis.edu/uploads/1/3/0/5/130540026/tavemupimemekadovel.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_off000071eb.bin
99cbf81b87f98ed1c28c1715e4ab831999459c1ad6ee75174777b8c7e1b79a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EB 8960 bytes

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