Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb9bee0162d33e2…

MALICIOUS

PDF

68.9 KB Created: 2021-09-25 08:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e76c1044f78349c64805b04d3ebc352f SHA-1: 9f241e416fed290e2d83c08f4528a003b33a91aa SHA-256: ceb9bee0162d33e2ebbe8514cdeac50a458efe02a75159fb2352ef5bf9634604
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an image lure and multiple embedded URLs, indicating a phishing or malware distribution attempt. The heuristic PDF_IMAGE_LURE suggests a typical phishing setup where a visual element hides a clickable link. The presence of numerous external URIs, including one pointing to 'garglob.ru', strongly suggests the document is intended to redirect users to malicious sites. No scripts were extracted, but the overall structure and URL findings are highly indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 68 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://garglob.ru/uplcv?utm_term=league+of+legends+wild+rift+apk+latest+version PDF link annotation
    • https://laatjehuisweerstralen.nl/upload/file/sebulibenarupirosinud.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16144b95beee2c---viwox.pdfIn PDF document text
    • https://cmoretv.com/userfiles/99599893267.pdfIn PDF document text
    • http://dissanna.com/temp/fckeditor/file/49744241141.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/74552980616.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/zenilumite.pdfIn PDF document text
    • http://locnuocvietmy.com/Images_upload/files/72631610864.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-16/20210916111322783964.pdfIn PDF document text
    • http://microsolder.hu/userfiles/files/tudisizisorusupukeluvaku.pdfIn PDF document text
    • http://esen-life.com/userfiles/file/fudasitisilulixidi.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/74177838721.pdfIn PDF document text
    • http://britishcytology.org.uk/ckfinder/userfiles/files/70125027582.pdfIn PDF document text
    • https://phnews.ro/files/file/gujikaba.pdfIn PDF document text
    • http://jevades.com/aircraft/fckimages/file/mijibiwozelatuzurerowam.pdfIn PDF document text
    • http://myphamnanyno.com/luutru/files/vominoledoxaligezewatumiz.pdfIn PDF document text
    • http://nasledie-sluck.by/var/upload/file/79523918586.pdfIn PDF document text
    • http://ldksolar-officialliquidation.com/userfiles/files/82102454606.pdfIn PDF document text
    • http://100gastro.cz/soubory/files/megipixubepofizus.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/gafuxik.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/fotifudekafenirolebifila.pdfIn PDF document text
    • http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/zejizoruporofiruvadavosa.pdfIn PDF document text
    • http://nscenter.cn/upload/files/retefelevexosejujitupo.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e3e0597a3---fakerurotepud.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/76015297716.pdfIn 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 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_off0000b038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB038 14376 bytes
SHA-256: 331904a9d73e81bad9d02f75ccec8472e7950b35496128d94bb7755b7372f9b5
font_01_sfnt_off0000d3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC00 10976 bytes
SHA-256: ca22f975ee77ade956ad8ee0401122e4779929443686cb2b3d5db72e7dcd5fa3