Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fdc029a4be95da…

MALICIOUS

PDF

32.6 KB Created: 2018-06-11 08:15:11 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a729d4c7206bfb82cf6085ffe5101824 SHA-1: 2673935762a6e5c20b83ac9b05eadfccafc2a186 SHA-256: 97fdc029a4be95da1704a7c41b64e15afe86824f8084c281d700fb09c3aa8d24
102 Risk Score

Malware Insights

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

The PDF was flagged by an ML classifier and a specific heuristic for being a fake download lure using SEO poisoning. The document body contains URLs that appear to be part of this lure, directing users to download a file from `uncpbisdegree.com`. This indicates an attempt to trick users into downloading potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9466

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://uncpbisdegree.com/download3.php?q=unlocking-the-spell-wide-awake-princess-2-ed-baker.pdf PDF link annotation
    • http://uncpbisdegree.com/download4.php?q=unlocking-the-spell-wide-awake-princess-2-ed-baker.pdfIn PDF document text
    • http://366weirdmovies.com/the-weird-movie-list/In PDF document text
    • http://www.hornywhores.net/In PDF document text
    • http://www.netrhythms.co.uk/reviewsb.htmlIn PDF document text
    • http://porno-rips.com/In PDF document text
    • https://1mbed.com/In PDF document text
    • http://www.pangloss.com/seidel/MPoem/mass_poem.cgiIn PDF document text
    • http://www.ideadiez.com/In PDF document text
    • http://riverside-resort.net/1/vanished-the-sixty-year-search-for-missing-men-of-world-war-ii-wil-s-hylton.pdfIn PDF document text
    • http://riverside-resort.net/1/visual-basic-how-to-program-6th-edition.pdfIn PDF document text
    • http://uncpbisdegree.com/1/speaking-from-among-the-bones-flavia-de-luce-book-5.pdfIn PDF document text
    • http://riverside-resort.net/1/visiting-card-design-gujarati.pdfIn PDF document text
    • http://uncpbisdegree.com/1/smalltalk-bytes-book.pdfIn PDF document text
    • http://uncpbisdegree.com/1/sociological-theory-classical-statements.pdfIn PDF document text
    • http://uncpbisdegree.com/1/struts2-spring-hibernate-sample-application.pdfIn PDF document text
    • http://riverside-resort.net/1/use-of-library-materials-university-of-pittsburgh-study-vol-26.pdfIn PDF document text
    • http://riverside-resort.net/1/what-transmission-is-in-91-s10.pdfIn PDF document text
    • http://uncpbisdegree.com/1/the-bonesetters-daughter-amy-tan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.mariowiki.com/Princess_PeachIn PDF document text
    • http://disney.wikia.com/wiki/Disney_Magic_KingdomsIn PDF document text
    • https://it.wikipedia.org/wiki/EBookIn PDF document text
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=IT_EN&a=https%3a%2f%2fit.wikipedia.org%2fwiki%2fEBookIn PDF document text
    • https://abcnews.go.com/US/In PDF document text
    • http://gatesofvienna.blogspot.com/In PDF document text
    • https://www.amazon.com/movies-tv-dvd-bluray/b?node=2625373011In PDF document text
    • http://tvtropes.org/pmwiki/pmwiki.php/Main/VideogameCaringPotentialIn PDF document text
    • http://tvtropes.org/pmwiki/pmwiki.php/Main/OurDwarvesAreAllTheSameIn PDF document text
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=FR_EN&a=https%3a%2f%2f1mbed.com%2fIn PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4241 10572 bytes
SHA-256: 15186c7c2d96e90deca293a28a387d5554de898394f575bbda22286bd319b381
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 7624 bytes
SHA-256: a8e785e38e6860727a25930509b53bb20a8a199812d7c81abcda4d877d2ab202

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