Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 145592f77c165e82…

MALICIOUS

PDF / .VIR

333.5 KB Created: 2024-03-28 02:48:30 Authoring application: ImageMagick First seen: 2024-07-08
MD5: 8529895d34b480a29e9021496a2cb52c SHA-1: 8aee4534ae138d4467fb342926d0f3ee5441f429 SHA-256: 145592f77c165e82cca694be652db9bdedb473326af53860f03b7f91e3a1cf2a
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://pornstarrankings.com/go.php?url=https://5.imimg.com/data5/SELLER/Doc/2024/4/414183354/XG/ZU/CZ/220913765/29780767542.pdf In PDF document text
    • https://my.boox.eco/link?url=https://arhusynergy.umd.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tibexuwuvusifa.palsaikbbq.com/f/34620329&a=&s=scan-demo&e=/:promoIn PDF document text
    • https://www.girlznation.com/cgi-bin/atc/out.cgi?id=50&l=side&u=https://assets.website-files.com/65dcc5e128b662fbd3c91389/662de269ed4686004d83c5fc_94746181665.pdfIn PDF document text
    • https://www.ellopos.com/study/frclose.asp?h=https://5.imimg.com/data5/SELLER/Doc/2024/4/414180460/PJ/VG/QR/220914333/37729680159.pdfIn PDF document text
    • http://www.frasergroup.org/peninsula/guestbook/go.php?url=https://uploads-ssl.webflow.com/65e86fd77f77f80a08be6757/662de15fadb5dcfda289890f_mobesapiwuzife.pdfIn PDF document text
    • https://www.guiasobral.com.br/acesso_banner.php?tipo=1&id_banner=2&link_banner=https://assets.website-files.com/65dc92a663541f4698a841bd/662de97122965ffd8361af50_revuzejolawibibo.pdfIn PDF document text
    • https://www.ordnen-im-inneren.de/go?url=https://lib.bsu.edu/common/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bewari.gfxtoolkit.com/f/7738In PDF document text
    • https://jinja-modoki.com/jinja-warn.php?url=https://assets.website-files.com/660037ea13d5a8d681ef9c1c/662ded82b1781cb0cdd6b21e_donezazegutepib.pdf&cookie=1In PDF document text
    • https://www.01.esquelesquad.rip/?url=https://go.pittstate.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://luwuguzawof.thiranmanamalai.com/f/326365830In PDF document text
    • https://renejuwunibolo.loheb.co.za/92459774569424957514519300?titafisadofujofesuluguk=tuxokuxuzelaberujedikegujaxepukogolipagusaserujinodulugegetizatewamipuvefadofunalusufejebokatapedapizetefivefedamebovemitezegerasuwupinokoverunuvidagigexebuvevogubukaxapazikaketonuvexupidalexozibipoguvozegi&utm_term=cladogram+practice+problems&wejoxenazisogomifasukazidavanivitozulaziku=fidowotovivaxobijiliketesabijutujemekimezosajejebasuladanabujuwuromividedosotorulisobubaxavavojefigasafobozasatonuvokixagowuzugiwimanezojuvipIn PDF document text
    • http://www.lesbianism.tv/d/out?p=10&id=2255498&s=195&url=https://connect.cuchicago.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zajof.gmcalaya.com/f/81873In PDF document text
    • https://www.bettnet.com/blog/?URL=https://go.pittstate.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://soxejarapu.club-directory.com/f/17126In PDF document text
    • https://renejuwunibolo.loheb.co.za/92459774569424957514519300?titafisadofujofesuluguk=tuxokuxuzelaberujedikegujaxepukogolipagusaserujinodulugegetizatewamipuvefadofunalusufejebokatapedapizetefivefedamebovemitezegerasuwupinokoverunuvidagigexebuvevogubukaxapazikaketonuvexupidalexozibipoguvozegi&utm_terPDF link annotation
    • https://renejuwunibolo.loheb.co.za/92459774569424957514519300?titafisadofujofesuluguk=tuxokuxuzelaberujedikegujaxepukogolipagusaserujinodulugegetizatewamipuvefadofunalusufejebokatapedapizetefivefedamebovemitezegerasuwupinokoverunuvidagigexebuvevogubukaxapazikaketonuvexupidalexozibipoguvozegi&utm_term=cladogram+practice+problems&wejoxenazisogomifasukazidavanivitozulaziku=fidowotovivaxobijiliketesabijutujemekimezosajejebasuladanabujuwuromividedosotorulisobubaxavavojefigasafobozasatonuvokixagowuzugPDF link annotation
    • https://www.hotpornphotos.com/kye/lsve.cgi?kye=1&s=65&u=https://fsp.unc.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bugoromujo.gfxtoolkit.com/f/584709977In PDF document text
    • 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_off0004e5d7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e5d7.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5D7 12000 bytes
SHA-256: 9f8d96720619b91bbda87c0fdd6ae2618c202e4aff6591b2d7af1e827f3bf738
font_01_sfnt_off000501e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x501E2 14768 bytes
SHA-256: 263ffc7d72840f661423157202413a6db4cfb67cfc465e3f7746e2cc8e08492e