Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6af14312d9b1f6b…

MALICIOUS

PDF

85.4 KB Created: 2021-09-21 04:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8b645619e2240cccfaf487e7c0abe741 SHA-1: d04f94525094e6d25a1e4a988ab379720831b1a2 SHA-256: d6af14312d9b1f6be146d922b3a3bbd8507b06ed9cca1a316ccc4127611e9fcb
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. The document contains a link farm pointing to numerous disposable domains and compromised WordPress sites, suggesting an attempt to distribute further malicious content. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document likely instructs the user to engage with remote support tools, a common tactic in social engineering attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://infrive.ru/uplcv?utm_term=artrage+android+app PDF link annotation
    • http://zhatuogz.com/uploadfile/file/xulimuridefipu.pdfIn PDF document text
    • http://pushgroup.lv/userfiles/files/69259147454.pdfIn PDF document text
    • http://dworbieland.pl/userfiles/file/43275362331.pdfIn PDF document text
    • https://ghnservizi.com/file/kibedijo.pdfIn PDF document text
    • http://sm300159.agchost.com/userfiles/files/kanunuxogadozozomir.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/16252892717.pdfIn PDF document text
    • http://spokoino.ru/i/upload/files/fubilozaxiralojefug.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614069208e401---xabolowo.pdfIn PDF document text
    • https://emailing-online.fr/uploads/userfiles/file/1779640039.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/58504200840.pdfIn PDF document text
    • https://maria-galland.ru/files/file/59030410678.pdfIn PDF document text
    • http://jowinbio.com/upload/files/202109161457095295.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132c40c8f712---mekozolafixukir.pdfIn PDF document text
    • http://issaproject.com/app/views/panel/ckfinder/userfiles/files/59501580674.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1613782654b48f---8031275318.pdfIn PDF document text
    • http://askort.pl/Upload/file/wusufutugopa.pdfIn PDF document text
    • http://1000projects.ru/upload_picture/file/bajipazerib.pdfIn PDF document text
    • http://haiqi-machine.com/d/files/xutotubelen.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af8c4a356c---buwedesejagalokoto.pdfIn PDF document text
    • https://educhina.mn/editor/files/94907018155.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/gulutiseju.pdfIn PDF document text
    • https://watosaphotography.com/app/webroot/userfiles/files/20210913_212804.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/b4f912963b295fc2c789b132ffdd0f7c/jepamarezenaxejuximopala.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/72381703868.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_off0000e9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B3 10332 bytes
SHA-256: 2958b772962b72a488a5850ae3f3cf013487a538ee5bb4144d915399a9eb02bb
font_01_sfnt_off000100e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E2 18056 bytes
SHA-256: 0ef76a77472a85f13a00f62b533377659f040ef4813fd3a7e1e0bd58d2f6cb29
font_02_sfnt_off00012fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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