Malicious PDF — malware analysis report

Static analysis result for SHA-256 802854c6394dce6e…

MALICIOUS

PDF

84.2 KB Created: 2021-09-03 22:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0367bf86c26f27277fc840ede2f172bb SHA-1: af5574bc3ef9bf95aa11df190234183b84a7f3cd SHA-256: 802854c6394dce6ebbcd8d43e161e8c19701a6aa5cebe4b706a3e153e7f4029d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm hosted on disposable domains. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are used to distribute further payloads or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • 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 https://allytemp.ru/uplcv?utm_term=apeman+c450a+dash+cam+manual PDF link annotation
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/5d9a5c78e01c5c8c6d14da8c45719361/kidokenivekodetebujeva.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/23995280011.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a12c2d03908---joragux.pdfIn PDF document text
    • https://imahima.xyz/js/ckfinder/userfiles/files/zupesexibelotogiwifaxifo.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/73350153929.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/wojuxomazuwilore.pdfIn PDF document text
    • http://solarissoft.com/img/userfiles/files/89913523091.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/8188cd956133076152ba624e1e649765/74971642645.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b566fe07128---6029799203.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/88989495485.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/22184240743.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c327eae43e6---xunudarulizero.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e241034f9---5692998348.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/nikur.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/d27e0e42401d19a782754dec6c010f14/xenuwu.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021050223485455.pdfIn PDF document text
    • http://eichler-kammerer.de/verevuvafokesub.pdfIn PDF document text
    • http://foxadv.net/file/dixunutukikeratejamom.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/63685284478.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/ufsfrf5j3itc3ts7kq42gkra45/xudedi.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/aae8cc65091da57e2e940442a472b876/vugovumudawemikemim.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_off0000df43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF43 10784 bytes
SHA-256: ab1c21d43e974f0b802ca4be02bac2fd760f98779da64dfc3a49915f0cb8c2dd
font_01_sfnt_off0000f7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FC 19468 bytes
SHA-256: cfb22aa1a5aff5caf8aa6411dc532ad79b6df306b72715723b5f473ffac4139f
font_02_sfnt_off000129a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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