Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e381f50ee0c251…

MALICIOUS

PDF

89.5 KB Created: 2021-09-03 04:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 23c7563d7c917edc06036527c667c91d SHA-1: fc3d48c188f28e96e382f0108e5f45b6b966c809 SHA-256: 69e381f50ee0c2513b7aa322a5181cddee7ee196a5a852711d3881c3449f9fae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress uploads and disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers identified this as a phishing trojan. The presence of external URIs and link farms suggests an attempt to lead users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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.
  • 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://oniceh.ru/uplcv?utm_term=movimiento+rectilineo+uniforme+variado+ejercicios+resueltos+pdf PDF link annotation
    • http://cimkezes.hu/uploads/ckfinder/userfiles/files/bitejusopewo.pdfIn PDF document text
    • http://forumcutuca.com/ckfinder/userfiles/files/talexujupejoji.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afdf3d89831---68334121260.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/zojutomijorelevakigujo.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d1ed0f9a57d06fb6aac36069db368534/sapelakalufelumavuda.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/guzobobalasa.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/21581045765.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/novunusog.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/pakalojovofoluzoloz.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160715791908b9---56187153681.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/70200505294.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/6b11fecfc301ad02609c505aefc225c2/woposetupubowam.pdfIn PDF document text
    • http://tuvanluatdanang.com/upload/ck/files/88296439318.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/96205308560fb8e687bfea.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/jaramiduzojox.pdfIn PDF document text
    • http://ypcalumni.com/clients/2/24/24042806289e0d450134266962f0a0d8/File/rekexugixalopomaduvuri.pdfIn PDF document text
    • http://asustainable.com/global/file/29494439629.pdfIn PDF document text
    • http://skomi.ru/img/files/file/purigadifisibenom.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/zekironogexekexawodalojat.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/97061709720.pdfIn PDF document text
    • https://pmeds.us/userfiles/file/27527879672.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/f0a75af5ec77d5cf193d810579489f35/luxuvakawi.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612eec256041d---kexarigiviloxupenaju.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fabaf8ecd17---rinepelid.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_off0000f1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DB 20492 bytes
SHA-256: f069c8ef4e3864fee43482ec511af2aa680e781b15d5efe463eceb62e3961906
font_01_sfnt_off000125ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AC 11072 bytes
SHA-256: 28520cfedc1ffb619265bc1c14c931520125482d2c16776da1614da5611c92d0
font_02_sfnt_off00013f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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