Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fe192657214c59…

MALICIOUS

PDF

70.9 KB Created: 2021-09-24 23:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fe21cfc8fa1ff14f9e16932846f14335 SHA-1: 0daa84e6c011a90b70f1dea91c14086bbc4a8925 SHA-256: 02fe192657214c591207fc33e318852030d57ea4f6b151539e6073836cba1839
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is flagged as a phishing lure due to its small size and image-only content, typical of a screenshot designed to hide clickable elements. The ML classifier and ClamAV detection strongly indicate malicious intent. The document likely attempts to redirect users to malicious sites via the embedded URLs, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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 70 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lynxitservices.com/ckfinder/userfiles/files/korarojajoxi.pdf In PDF document text
    • https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/73330194559.pdfIn PDF document text
    • http://oishisushigd.com/uploads/files/47530856983.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/efcfcbc24ca9689ece18deb5fbd48640/58777606401.pdfIn PDF document text
    • http://elcivan.com/admin/UserFiles/file/91634244155.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/xifuj.pdfIn PDF document text
    • http://www.niceresidence.net/image/upload/File/14824278015.pdfIn PDF document text
    • http://bowie.abwingsmd.com/uploads/files/pebozoma.pdfIn PDF document text
    • http://cungcapbaoduongcuanhatban.com/upload/files/soduruwos.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/kafotupubabus.pdfIn PDF document text
    • https://xn--fiqa735be48e.com/upload/files/8293144036.pdfIn PDF document text
    • http://zabbeleecooking.com/ckfinder/userfiles/files/dofemotofumi.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/tugefazofaximer.pdfIn PDF document text
    • http://okfilm.kr/userData/board/file/1743380409.pdfIn PDF document text
    • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/kukuzixotutopoka.pdfIn PDF document text
    • http://dywin.com/uploadfile/files/71713740670.pdfIn PDF document text
    • http://master-br.ru/img/file/63278595551.pdfIn PDF document text
    • https://camelcarpet.org/d/files/sisedipekof.pdfIn PDF document text
    • http://autosvilar.com/uploads/ckfinder/files/pilagetakuvedupesowafobim.pdfIn PDF document text
    • https://motoralbini.it/files/file/sazoledapawolomejenud.pdfIn PDF document text
    • https://slide-bearing.com/d/files/90027982034.pdfIn PDF document text
    • http://nsmpublicschool.org/slbdavbatala/userfiles/file/20647071603.pdfIn PDF document text
    • https://cancelaria.pl/galeria/file/duminitogor.pdfIn PDF document text
    • http://ksiclub.org/projects/achievemore/admin/upload/fckImages/file/lufujejuf.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/14408061035.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=wonder+woman+1984+full+movie+2020+watch+online+freePDF 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_off0000b388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB388 14616 bytes
SHA-256: 01b777395e9af7234e98c8156a6db5b0b98d0c6174cbdc5761c64109bbeeda8e
font_01_sfnt_off0000d7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A9 11564 bytes
SHA-256: 2b726b203db7e8324424db38eef8d719dc70700b5133165326a10c3dd4640b09
font_02_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1