Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d2ece474a77da9…

MALICIOUS

PDF

84.5 KB Created: 2021-09-08 14:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0b4ec849dcddbd61388dc0748f92cf7f SHA-1: 7a0f8a0ba28d24af19852954318f46d388cda0a6 SHA-256: 02d2ece474a77da9260d671d8b07fbdfc7728ef45bf9a9978435635edf6661f3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection as a phishing trojan. It contains numerous external URLs, many pointing to disposable hosting or compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of 'cmd.com' in the document text, alongside PDF URI heuristics, indicates an attempt to execute commands or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://garglob.ru/uplcv?utm_term=concordance+des+temps+au+subjonctif+pdf PDF link annotation
    • http://z500.si/files/26985261655.pdfIn PDF document text
    • http://springgalleryng.com/Images_upload/files/rodavovudaxi.pdfIn PDF document text
    • https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/31590647236.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd3155f509---97386787835.pdfIn PDF document text
    • http://ruresept.ru/files/file/36122971636.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/42727258754.pdfIn PDF document text
    • http://bonezi.morefriendship.com/upload/files/80409227151.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/60970272628.pdfIn PDF document text
    • http://zvezda-rostov.ru/ckfinder/userfiles/files/jekonopovel.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/3001983879.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/371e52a5e9fa3397d9291b8d0256f2b4/62405866929.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/97656340632.pdfIn PDF document text
    • http://hotdeals24x7.com/ci/userfiles/files/pofedogugugisosevabibe.pdfIn PDF document text
    • http://kamennykoberec.eu/editor_uploads/system/files/38288350630.pdfIn PDF document text
    • http://expresskaliski.info/file/sewova.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/rumejenexozusenufujor.pdfIn PDF document text
    • http://diamant-x.sk/UserFiles/file/bosokat.pdfIn PDF document text
    • https://heart-calligraphy.com/uploads/files/202109062302088966.pdfIn PDF document text
    • http://qdcmd.com/data/files/kosewirozenojesiregamofu.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/rozoni.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/nofax.pdfIn macro / runtime command snippet
    • http://hitecds.com/userfiles/file/jadosafikor.pdfIn macro / runtime command snippet
    • https://ags-car.60km.com/upload/files/10553999047.pdfIn PDF document text
    • https://www.restaurant-latableedevercel.com/ckfinder/userfiles/files/39899619666.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161304b559765c---madov.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_off0000dbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE8 11136 bytes
SHA-256: 9ab6bf38802a8cd181d347d0faa11e25c2ba436a5a239ed5ee87904babf61ad5
font_01_sfnt_off0000f5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A4 21800 bytes
SHA-256: be2fdd939f6492c80948109d8b8d7c278dc3e44df33e1a0f518542ef973ed0e7
font_02_sfnt_off00012bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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