Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a642cb551eeb64…

MALICIOUS

PDF

67.9 KB Created: 2021-09-13 20:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7d068a9b2f726913b8e4a5c3f16774f2 SHA-1: 28dd5e77f4aa56e421da7fd7f3e51054b5a89803 SHA-256: d2a642cb551eeb64159a0de12f434d44edfc9320ee6e87f99eb1c1047286083d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and appear to be part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to obscure the true destination or to host a large number of lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=flv+downloader+android PDF link annotation
    • https://etravelbox.com/scgtest/team-explore/uploads/files/18145044349.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/giwefex.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/wujajapaxex.pdfIn PDF document text
    • http://racecross.com/upload/edito_fckeditor/file/xomoratidapa.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/viworaxekofo.pdfIn PDF document text
    • http://divyabodhanam.org/userfiles/file/gisagirarijikukizu.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/labupunonifolokim.pdfIn PDF document text
    • http://myshiou.com/uploads/files/202109052207374104.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/72580610435.pdfIn PDF document text
    • http://koreaticketland.com/userfile/file/15846514834.pdfIn PDF document text
    • http://www.romanschatztruhe.de/img/files/27753861640.pdfIn PDF document text
    • http://pvvc.cz/files/87367908213.pdfIn PDF document text
    • http://thebrownbag.vn/upload/files/74327040215.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139b9f60cfc2---renokadetikarumufusatuxe.pdfIn PDF document text
    • http://mudrberanova.cz/userfiles/file/foremowe.pdfIn PDF document text
    • https://xn--80aggmy8c6c.net/UserFiles/File/bubapibogodejidapelerined.pdfIn PDF document text
    • http://krishikhabar.net/assets/ckfinder/core/connector/php/uploads/files/41636314897.pdfIn PDF document text
    • https://tiguan-wiki.ru/file/55996092062.pdfIn PDF document text
    • https://menokatea.com/ckfinder/userfiles/files/51830135846.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/girulugawipupeziromud.pdfIn PDF document text
    • https://digireg.dk/upload/jadesizugojikenax.pdfIn PDF document text
    • http://heryeryesil.com/resimlerfiles/xuvabeminatazapezugafa.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/69725230699.pdfIn PDF document text
    • http://marymo.ru/uploads/files/kapujotiwenu.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/65008890718.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_off0000af2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2E 10104 bytes
SHA-256: b9b3c301c67b562e32204700e193fe07f54c935096b41f8321520cceecad3ebe
font_01_sfnt_off0000c5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C2 14600 bytes
SHA-256: 8e791ce285730a6723600d11214c13cc0335d2952806e58374ab1431d7856ceb
font_02_sfnt_off0000ea3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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