Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02d3b3bb6bddf64…

MALICIOUS

PDF

47.6 KB Created: 2018-06-11 09:37:43 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 606b6a93138d3242f13c674eef0334bc SHA-1: 3e05977435d2828c9479f5874ca34b07c274a5ff SHA-256: a02d3b3bb6bddf643a55caba29315e2d613857d89ef692c25db0b5a783d8e533
130 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7553

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-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdf In PDF document text
    • http://uncpbisdegree.com/download4.php?q=the-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdfIn PDF document text
    • http://createdtobehis.com/file/the-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdfIn PDF document text
    • http://forbiddenfallacy.com/the-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdfIn PDF document text
    • http://www.swedishlifesciences.se/the_little_black_book_of_party_games_the_essential_guide_to_throwing_the_best_bashes.pdfIn PDF document text
    • http://www.cierdental.com/the-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdfIn PDF document text
    • http://www.axostech.com/the-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes.pdfIn PDF document text
    • http://riverside-resort.net/1/the-double-daring-book-for-girls.pdfIn PDF document text
    • http://riverside-resort.net/1/sports-car-with-one-seat.pdfIn PDF document text
    • http://riverside-resort.net/1/the-metabolic-typing-diet.pdfIn PDF document text
    • http://riverside-resort.net/1/trailer-wiring-plug-diagram.pdfIn PDF document text
    • http://riverside-resort.net/1/steinbeck-ghost.pdfIn PDF document text
    • http://riverside-resort.net/1/the-beauty-detox-power-nourish-your-mind-and-body-for-weight-loss-and-discover-true-joy.pdfIn PDF document text
    • http://riverside-resort.net/1/the-hottest-ticket-in-town-mills-boon-blaze-the-wrong-bed-book-60.pdfIn PDF document text
    • http://riverside-resort.net/1/slcog-guidelines-gestational-diabetes-mellitus.pdfIn PDF document text
    • http://riverside-resort.net/1/systems-architecture-sixth-edition.pdfIn PDF document text
    • http://riverside-resort.net/1/smart-serve-answer-key-2015.pdfIn PDF document text
    • http://premiumdigitalbooks.top/?book=1593599196In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.amazon.com/Little-Black-Book-Party-Games/dp/1593599196In PDF document text
    • https://www.amazon.com/Occasions-Cooking-Food-Wine-Books/b?ie=UTF8&node=4327In PDF document text
    • https://www.amazon.com/Little-Black-Book-Party-Games-ebook/dp/B004CYF83OIn PDF document text
    • https://www.amazon.com/Kindle-eBooks/b?ie=UTF8&node=154606011In PDF document text
    • https://www.amazon.com/Humor-Entertainment-Kindle-eBooks/b?ie=UTF8&node=156279011In PDF document text
    • http://www.dailymotion.com/video/x58cccmIn PDF document text
    • https://www.barnesandnoble.com/w/home-gift-little-black-book-of-party-games-the-essential-guide-to-throwing-the-best-bashes/12918747In PDF document text
    • https://www.ehow.com/list_6960063_crazy-party-games.htmlIn PDF document text
    • https://www.ehow.com/parties/entertaining/In PDF document text
    • https://www.ehow.com/parties/entertaining/entertaining-ideas/In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617350In 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://www.barnesandnoble.com/w/home-gift-little-black-book-ofIn 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_off00006dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 14700 bytes
SHA-256: 987f206a1b6bd739570381c4be9fea835e5854d8324d69bd48e1016d9478daab
font_01_sfnt_off00009ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC2 8380 bytes
SHA-256: 6f4172e815436497bdd344188df667004061198ff09476014d71d714caea009e