Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1bca0171d1441b…

MALICIOUS

PDF

36.2 KB Created: 2020-04-06 08:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5bf949c70b47c769be61784eaa62831e SHA-1: 56222ddcd21e7f92ed1a6e71c97cacd8d7d94b57 SHA-256: 3e1bca0171d1441b5e5180e088338f67e8bd46deeedca6930d84ae468aa75122
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, includes a URL that points to a similar structure. This suggests the primary purpose is to redirect users to a network of linked documents, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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://cicchiservizi.com/uploads/1/3/0/7/130739152/130739152.html#teclado+de+computadora+de+escritorio+para+imprimir
    • http://gphabitat.org/uploads/1/3/0/5/130551726/5eed609a8.pdf
    • http://kobiarditi.com/uploads/1/3/0/5/130540592/0362c2.pdf
    • http://mindfulevolution.net/uploads/1/3/0/6/130604091/toxofujoli-pizawawinude.pdf
    • http://nelsonendeavorsllc.com/uploads/1/3/0/7/130739964/68079b0325.pdf
    • http://smjestaj.delorita.com/uploads/1/3/0/4/130483331/bibunini-viwanilo-lovutirup.pdf
    • http://azzurrawebart.com/uploads/1/3/1/4/131482959/gixedejuk_vuberusadazuzug.pdf
    • http://educationforallllc.org/uploads/1/3/1/3/131398431/b663ba171af165c.pdf
    • http://brisbanebirthing.com/uploads/1/3/0/6/130604191/moxetilemowupis_selosoxabetaf_tatadaxajusef.pdf
    • http://ideasworkshopuganda.com/uploads/1/3/0/7/130776536/cc50b59fc.pdf
    • http://2004-automatic-f-150.com/uploads/1/3/0/6/130621557/xisut.pdf
    • http://mylemakingyourlifeeasier.com/uploads/1/3/0/3/130313309/fubegexaminafebimap.pdf
    • http://smokinfrannys.com/uploads/1/3/0/2/130288559/219f1550adf7da8.pdf
    • http://kilkennyglynn.com/uploads/1/3/0/9/130969824/sugate_bugub_sajuxulixuvas.pdf
    • http://mail.amboy.net/uploads/1/3/0/6/130604434/fd65998b22c52.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_off000062dd.bin
15c5fb8b7d5d351b5e01f2ef9fd53db49f473a3ae1a847578e6b62f367da695d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DD 8400 bytes

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