Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 157a2bb0d8dc8592…

MALICIOUS

PDF / .VIR

445.4 KB Created: 2024-05-02 20:57:04 Authoring application: GIMP First seen: 2024-07-13
MD5: 668611828e0be7f8ba56e16da2de856c SHA-1: b0e3f583f0ae9ef0365dc8ccf13f94f1ec17642a SHA-256: 157a2bb0d8dc8592a9c0d425bca07b358e0ccdb32e1b68e5dccda677584459f1
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8987

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://www.petrolnews.net/click.php?r=221&url=https://tischlerei-schlusche.de/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zifobum.club-directory.com/f/214457647 In PDF document text
    • https://www.mobeljakt.se/goto/?b=furniturebox&epi=howardsoffor-3&l=https://newmediadl.cas.msu.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gujipenuxaduvu.gmcalaya.com/f/97602In PDF document text
    • https://guiatangaradaserra.com.br/acesso_banner.php?tipo=2&id_banner=12&link_banner=https://greenwichbikes.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tifejaz.ibcphoenix.com/f/45709959In PDF document text
    • https://dfch.ru/bitrix/redirect.php?goto=https://uploads-ssl.webflow.com/65effbab6df82594834e00da/6633954686fef3f6a1f96694_91150285726.pdfIn PDF document text
    • http://iklanumum.com/url.php?url=https://portal3.samford.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://fisede.theplazahotelbalanga.com/f/929773795In PDF document text
    • http://yxzy.whu.edu.cn/index.php/go?cutt.ly/qCS6CL8&url=https://magicdiscoradio.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://buzatufetuju.salvaralbucardo.com/f/412150446In PDF document text
    • https://shopkarat.ru/bitrix/click.php?goto=https://theater.ucsc.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://guzejomuzunasov.mytickethomeband.com/f/166537873&url=http://zw.stopsbs.net/4743-temperature-humidity-light-and-other-requirements-fo.htmlIn PDF document text
    • http://www.darklyabsurd.com/guestbook/go.php?url=https://uploads-ssl.webflow.com/66005b3238088944d6ff40f1/663395e67c26e292f36bd9f4_49099239052.pdfIn PDF document text
    • https://danii15pove.mpg.gg/redirect?url=https://pages.uwf.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://kujuw.mytickethomeband.com/f/48065168In PDF document text
    • https://pamabukeda.mofien.co.za/86349033189952334225984569?niguxafeboveleruvisuredutinezixa=mewunopajedutelelovubopujurixikevamuvolejozireworalilejotuxiguvutamonesamowusoruboxetutarezuxesokosunevofotadojodufekoserivowafiwatimogubuperetipiwadevididedejomeroxototolabawarolegilisuduzigokawavirise&keyword=cavs+city+edition+jersey&dijolevejubedanaratebaliguxibuvunirowugunalulikubujonozufozuxisiv=lusanugujefebilenenosotasapowunoriwisinusubosaziwijutuwofawejatofizuziwabutuzepemutugiponijuleliwesurumajumorazoroxibofeziwumawulowixelizotojoIn PDF document text
    • https://cuqa.ru/links.php?url=https://portal3.samford.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jumefopeni.thiranmanamalai.com/f/487599695In PDF document text
    • https://pamabukeda.mofien.co.za/86349033189952334225984569?niguxafeboveleruvisuredutinezixa=mewunopajedutelelovubopujurixikevamuvolejozireworalilejotuxiguvutamonesamowusoruboxetutarezuxesokosunevofotadojodufekoserivowafiwatimogubuperetipiwadevididedejomeroxototolabawarolegilisuduzigokawavirise&keywoPDF link annotation
    • https://pamabukeda.mofien.co.za/86349033189952334225984569?niguxafeboveleruvisuredutinezixa=mewunopajedutelelovubopujurixikevamuvolejozireworalilejotuxiguvutamonesamowusoruboxetutarezuxesokosunevofotadojodufekoserivowafiwatimogubuperetipiwadevididedejomeroxototolabawarolegilisuduzigokawavirise&keyword=cavs+city+edition+jersey&dijolevejubedanaratebaliguxibuvunirowugunalulikubujonozufozuxisiv=lusanugujefebilenenosotasapowunoriwisinusubosaziwijutuwofawejatofizuziwabutuzepemutugiponijuleliwesurumajuPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00069bc2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00069bc2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC2 16844 bytes
SHA-256: 1cbbc95e244a40913566a487115f73f2078de5a0ecd9f3b069e427680a2bf2ac
font_01_sfnt_off0006c7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7AA 12232 bytes
SHA-256: cf984b62b9f476104bb1b49b1c2623482f7f5474a5ed6f768f31cc3bbea28ea8