Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f27be0bf99b58b1…

MALICIOUS

PDF

88.5 KB Created: 2021-09-04 03:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 50c8a6fb562854822379bad5bbf17f7e SHA-1: a0bbae0a2009182584d5140328b659295841d60e SHA-256: 0f27be0bf99b58b197c9aa562b9f8d69ebb5ab8f2b3016a243a4e6230a9b15e5
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm used for SEO manipulation or to host malicious content. The presence of a callback lure heuristic further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://catamma.ru/uplcv?utm_term=toyota+rav4+hybrid+2016+manual PDF link annotation
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/2681194fb7872e8be8542349834d2279/ruxetadume.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/jabidiviburuvovi.pdfIn PDF document text
    • http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/mizapigoze.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/13034720753.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/fuworamibogiwijef.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/5860088679.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/jerogosekitaboduruvatola.pdfIn PDF document text
    • http://maristaslardero.es/userfiles/file/dekoradolozolejakepa.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d098cf4154---mirabadixovut.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/50737973121.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/2hvik4shu0u6posliv6umhl7e0/20186750503.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/sovitobetiwovugid.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/41280683768.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/ligufezunuxopu.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/32009802547.pdfIn PDF document text
    • http://sport-way.ru/img/file/sirosaxut.pdfIn PDF document text
    • https://wojczak.pl/userfiles/file/97566210459.pdfIn PDF document text
    • http://lapempi.nl/ckfinder/userfiles/files/45149648214.pdfIn PDF document text
    • https://gea99.com/ckfinder/userfiles/files/6868625156.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a56c3cfcfe---58760601226.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/89tpa5j0gacujd49mtr4p5mps4/zerigulenog.pdfIn PDF document text
    • https://alwillislifecenter.org/ckfinder/userfiles/files/labenubelaxolev.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/worevazuje.pdfIn PDF document text
    • https://proxus.nl/file/nolatevozuxenasinij.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/tebulanitusuvuw.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160959cce15d74---83122197487.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_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 11136 bytes
SHA-256: fb8b58cf172dac6d7ade51fdf9f042461b02874e058ad974112f3cb9add9f036
font_01_sfnt_off00010ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000126f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F4 17212 bytes
SHA-256: 2261ddea1b892ce6d80a7bca1824a2dfd7612148826d13e072c211b329c1ebeb

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