Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff8619ae204d247…

MALICIOUS

PDF

36.3 KB Created: 2018-06-11 08:50:23 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-09-24
MD5: f78366ad88a314801e8cfe37b1067ba2 SHA-1: 9a887889dbbfdd35fa319f8f421b2596a7caebc5 SHA-256: 2ff8619ae204d2471193bf3376b5b6fd4cc872c856d36f636c465863ed5ad3b4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded URLs that point to a domain associated with malicious downloads. The ML classifier flagged this PDF as malicious with a high probability. The document body and heuristics suggest a lure to download a file, likely a second-stage payload, related to 'apocalyptic science'. No scripts were extracted, limiting the analysis of the payload's specific actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9136

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.
  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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=the-prophet-and-the-astronomer-apocalyptic-science-and-the-end-of-the-world.pdf In PDF document text
    • http://uncpbisdegree.com/download4.php?q=the-prophet-and-the-astronomer-apocalyptic-science-and-the-end-of-the-world.pdfIn PDF document text
    • http://www.bible.ca/pre-date-setters.htmIn PDF document text
    • http://www.magicdragon.com/UltimateSF/thisthat.htmlIn PDF document text
    • http://www.friesian.com/Islam.htmIn PDF document text
    • http://wikiislam.net/wiki/Quotations_on_Islam_from_Notable_Non-MuslimsIn PDF document text
    • http://godevidence.com/2010/08/quotes-about-god-atheism/In PDF document text
    • http://www.preteristarchive.com/StudyArchive/f/false-prophets.htmlIn PDF document text
    • http://www.biblesearchers.com/prophecy/planetx/losttribes2.shtmlIn PDF document text
    • http://christinprophecyblog.org/2017/08/investigating-the-great-sign-of-revelation-12/In PDF document text
    • http://psychics.co.uk/blog/predictions-future-world/In PDF document text
    • http://ldolphin.org/gangels.htmlIn PDF document text
    • http://www.newprophecy.net/popejohnpaul.htmIn PDF document text
    • http://www.alienstranger.com/arealiensdemons.htmIn PDF document text
    • http://gutenberg.ca/index.htmlIn PDF document text
    • http://freethoughtnation.com/dead-sea-scrolls-prove-bible-unoriginal/In PDF document text
    • http://www.energyenhancement.org/Demonic-Satanic-Mind-Control-using-Pedophilia-Torture-Drugs-and-Hypnotism-Demonic-MKUltra-Sub-Personalities.htmIn PDF document text
    • http://www.realjewnews.com/?p=477In PDF document text
    • http://www.manythings.org/vocabulary/lists/a/words.php?f=3eslIn PDF document text
    • http://riverside-resort.net/1/toyota-factory-manual-torrent.pdfIn PDF document text
    • http://riverside-resort.net/1/terms-amp-conditions-robert-glancy.pdfIn PDF document text
    • http://riverside-resort.net/1/study-guide-for-content-mastery-nuclear-radiation.pdfIn PDF document text
    • http://riverside-resort.net/1/surrender-to-fate-fates-path-1-jacelyn-rye.pdfIn PDF document text
    • http://riverside-resort.net/1/truth-and-tolerance-christian-belief-world-religions-pope-benedict-xvi.pdfIn PDF document text
    • http://riverside-resort.net/1/texas-board-of-law-examiners-pass-list.pdfIn PDF document text
    • http://riverside-resort.net/1/toyota-tundra-repair-troubleshooting.pdfIn PDF document text
    • http://riverside-resort.net/1/the-policy-paradox.pdfIn PDF document text
    • http://riverside-resort.net/1/the-good-wifes-guide-embracing-your-role-as-a-help-meet-kindle-edition-darlene-schacht.pdfIn PDF document text
    • http://riverside-resort.net/1/the-articulate-body-the-physical-training-of-the-actor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://en.wikipedia.org/wiki/List_of_dates_predicted_for_apocalyptic_eventsIn PDF document text
    • http://www.sacred-texts.com/bib/bep/bep01.htmIn PDF document text
    • http://longnow.org/seminars/02015/mar/31/creator-economy/In PDF document text
    • http://longnow.org/seminars/02017/apr/10/what-dying-teach-living/In PDF document text
    • https://www.nationalgeographic.com/magazine/In PDF document text
    • https://www.catholic.org/encyclopedia/view.php?id=3645In PDF document text
    • https://www.catholic.org/encyclopedia/In PDF document text
    • https://www.catholic.org/encyclopedia/encyclopedia.phpIn PDF document text
    • https://en.wikipedia.org/wiki/History_of_musicIn PDF document text
    • http://www.iranicaonline.org/articles/astrology-and-astronomy-in-iran-In PDF document text
    • https://www.hollywoodreporter.com/In PDF document text
    • https://www.psychologytoday.com/us/blog/inside-the-box/201402/thinking-outside-the-box-misguided-ideaIn 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_off000053ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EF 9796 bytes
SHA-256: abaed3dbcbd54f40d52082336ebe3260eb55a69edaaaa20078506b333b4840ea
font_01_sfnt_off00007343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7343 6752 bytes
SHA-256: c8d8cf09dcb1f9cb53d3e84fadcea2dee40624ef050c3ab325db30b40c9d9803

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