Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee432531a3ebee4…

MALICIOUS

PDF

67.2 KB Created: 2021-09-26 23:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a614b660fbcfe9df738a35c72455bcfa SHA-1: 2312f7dc555ec3ea1e1026ae3dc844e77e734194 SHA-256: bee432531a3ebee4a2292ee31dc3d9cfcd21a335c2dbe1d52bde60b6c9364396
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing an action trigger to an external URL. The presence of numerous disposable links on potentially untrusted domains further supports this. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://huntic.ru/uplcv?utm_term=download+pikashow+for+android
    • http://pzhjintai.com/upload/files/koxidejepukavonipudoju.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161317dfb1ed58---58426757915.pdf
    • https://www.hosotte.com/ckfinder/userfiles/files/72045414772.pdf
    • https://skyzoan.com/cake/beta/userfiles/file/suzixikifefelubefaxiv.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1614439bdd0ff0---5025606742.pdf
    • https://hoya.hr/UserFiles/file/duzirovisuvaweripume.pdf
    • https://playindiano1.in/ckfinder/userfiles/files/46180064650.pdf
    • http://libron.pl/fckupload/assets/file/sugesaboxamizaruvokukaloj.pdf
    • http://prime-standard.com/piceditor/file/pugotazawa.pdf
    • http://geombiagioschettino.eu/userfiles/files/pajebifaki.pdf
    • http://pieseclimaauto.com/files/file/fovemu.pdf
    • https://visualmotion.nl/uploads/file/vumovubodunefifunubalef.pdf
    • https://wmu24.ru/media/file/jexetuwulemideretugupep.pdf
    • https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/304952146.pdf
    • http://www.themixchange.com/userfiles/files/40199856758.pdf
    • http://52963566.com/upload/file/202109071645401617.pdf
    • http://deborahkay.com/ckfinder/userfiles/files/25322855568.pdf
    • https://art-eria.pl/mandarynka/pliki/files/kidava.pdf
    • http://phantasos.org/userfiles/file/sotisenufupefitixax.pdf
    • https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/15463090962.pdf
    • http://ciatic.saintelserver.com/archivos_editor/file/zoloz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aae5.bin
651b8b34ec2efc7f4e035698da68bc3720e6649871e94a9e90f4cc13b3129b9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE5 10544 bytes
font_01_sfnt_off0000c2cd.bin
48f8c0b7e183439da21b76f00ed5813b6bcf5d71550cbedf57b82b74066b680b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CD 14180 bytes
font_02_sfnt_off0000e5c5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C5 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.