Malicious PDF — malware analysis report

Static analysis result for SHA-256 0466e148a5eeda58…

MALICIOUS

PDF

107.2 KB Created: 2021-07-31 11:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: fe03e94f97647e5f2120b899354343aa SHA-1: 41ab6944be596b369f11590fcf52d4b63026b254 SHA-256: 0466e148a5eeda587ad9f703bc71a7823686f775b0ef1ad80099692345d2c1f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous external links, including those hosted on compromised CMS uploads and disposable domains, suggests a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attack pattern involving redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • 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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://easyliveconstruction.com/ci/userfiles/files/fedifosivonatogavudedod.pdf In PDF document text
    • https://moto-trend.cz/public/files/fck/file/zidalalawibikasojar.pdfIn PDF document text
    • http://kaizenlife.com/ckfinder/userfiles/files/79020453190.pdfIn PDF document text
    • http://bakkervoorwinde.nl/app/webroot/files/ckeditor_files/files/95692025159.pdfIn PDF document text
    • http://cesishotel.com/res/wysiwyg/file/70289973063.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/dr3nqa6rg2qf2nva71la6pjbq7l7mdfb/rulonowalazewonomoxadilej.pdfIn PDF document text
    • http://eau-msu.ru/ckfinder/userfiles/files/tijifo.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/e93bb50e8e5ff6458641369f82ed950c/kejefajukivebakagotimes.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/pavakukewakaneramilivuva.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///bulinojifuxizodolari.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/kiwumovozawusevanakumi.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160850488399e8---vusuwimasosixu.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/wezoxizifilitevux.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/9314e2dce138b532b7b1e5be554def5b/97029934226.pdfIn PDF document text
    • http://goldenteriyaki.com/uploads/files/bibisanemewizubigaruma.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/32d259a4da387716a849c4d6832e1219/81203471641.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/40957216956.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/skm2f4mo8biee2jh8olb1ios03/welijijef.pdfIn PDF document text
    • http://195exim.com/datas/files/33365494102.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f8dee2e1a---93328223480.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/43665714000.pdfIn PDF document text
    • http://davidlbrooks.com/clients/868292/File/fikiguvatijupinu.pdfIn PDF document text
    • http://land89.com/ckupload/files/52367999491.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/kuzinozibukolixozezumuku.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/4d73e05de30fe571ddd6643cd04c8642/fulasuwapeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=%D0%BF%D0%BE%D0%B7%D0%B4%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D1%81+%D0%B4%D0%BD%D0%B5%D0%BC+%D1%80%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2+%D0%BF%D1%80%D0%BE%D0%B7%D0%B5+%D0%BC%D1%83%D0%B6%D1%87%D0%B8%D0%BD%D0%B5+%D1%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8EPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13224 11360 bytes
SHA-256: 786ec10d4e93103757945c84edb62bba40222258aa0b55b8fcf3efbcd819f1fe
font_01_sfnt_off00014c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C9F 21256 bytes
SHA-256: 6d9849e3f72abdb3625b1a3673208371e1d66d496ee3e8993962cb220a9acea4
font_02_sfnt_off0001814e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1814E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1