Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c7192d1921728e…

MALICIOUS

PDF

70.6 KB Created: 2021-09-23 20:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f4feac9dbff72482132e04cfbbcdecbe SHA-1: a538b9b32c137adf1a66854ec2c4a72e80b35bcd SHA-256: 16c7192d1921728ef592b2b6e60a305b6d5d6d21a590aec45596254b57ff4f19
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are structured as link farms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing or trojan activity. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's used to redirect users to malicious sites, likely as part of a phishing campaign or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7670

Heuristics 4

  • 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
  • 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://nomylo.ru/uplcv?utm_term=pokemon+alpha+sapphire+download+for+citra PDF link annotation
    • http://gsemilia.it/userfiles/files/mozonujemitanotitetu.pdfIn PDF document text
    • http://www.ruben.pl/ckfinder/userfiles/files/dulijuza.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/kuborusugo.pdfIn PDF document text
    • https://atlantidegattico.it/file/64550945730.pdfIn PDF document text
    • https://global-brand.net/userfiles/files/zaromuvufiferepaxovo.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/63303422684.pdfIn PDF document text
    • https://stichtingech.org/ckfinder/userfiles/files/74074762297.pdfIn PDF document text
    • http://full814.com/upload/files/vexumim.pdfIn PDF document text
    • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/duwupefijemanu.pdfIn PDF document text
    • https://forexinc.ca/upload/editor/file/lofiloxasorijopowoguniri.pdfIn PDF document text
    • http://mega-stainlesssteel.com/uploads/image/files/kevemubenifavakowunilaliv.pdfIn PDF document text
    • https://tanhaithanhvalves.com/quangcao/admin/file/45688355702.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f947ce4030---59509005355.pdfIn PDF document text
    • http://upasamed.org/Content/uploads/files/rakabijori.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/30930248907.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/fawikolesidififajoso.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/rituxuxikajatakomopizur.pdfIn PDF document text
    • http://braghieriarchitettura.com/userfiles/files/60478080191.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f0d974b1b4---3828978043.pdfIn PDF document text
    • http://airzo.net/userData/board/file/nurarikafobisutagugiroja.pdfIn PDF document text
    • http://balletpanov.com/uploads/files/bizizosuxotamefusutopuw.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/64824916453.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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