Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee095e0b639c373a…

MALICIOUS

PDF

86.6 KB Created: 2021-10-04 22:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0b47edb8d0cd40b3f1e35ed2ae73fdb0 SHA-1: aa057cb6b775077c3e5f7197167cc2a78ca893da SHA-256: ee095e0b639c373aaae9af70b8ad5ff53f36725c9e303373f0f275c0092cdc71
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as a link farm, with many distinct hosts and disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs point to various compromised websites and potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://garglob.ru/uplcv?utm_term=how+to+get+slime+out+of+clothes+that+have+been+washed+and+dried PDF link annotation
    • https://speculatio.in/ci/userfiles/files/pavibovur.pdfIn PDF document text
    • http://chiari-web.com/ckfinder/optimist/files/ganuragezafumarowovogeg.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/gidefaxirajituxisabir.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/eb23687ce87e82423418fe471257c3af/letipet.pdfIn PDF document text
    • http://avtokapriz42.ru/userfiles/file/wozuritug.pdfIn PDF document text
    • http://win-sonic.com/ck_imgs/files/79349170882.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142ca4c8814a---64692987805.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/xapotaderewezatimetezel.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614cf6f862259---jikedigagoti.pdfIn PDF document text
    • http://happyhanool.com/ckupload/files/kuzedajebe.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/wedegixegetafiza.pdfIn PDF document text
    • http://www.tivafa.hu/upload/file/lomaguvevuvuwo.pdfIn PDF document text
    • http://shortguycentral.com/ck_uploads/files/45381395593.pdfIn PDF document text
    • https://digireg.gr/upload/kabevatosuxapulipivipu.pdfIn PDF document text
    • http://www.benyowsky.com/resources/files/33052439154.pdfIn PDF document text
    • https://mpksieradz.pl/upload/file/97927936413.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/92227231015.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/sasomakanujewenuwol.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/sonamu.pdfIn PDF document text
    • http://worldsocialistpartyindia.org/ckfinder/userfiles/files/jasojob.pdfIn PDF document text
    • http://electric-kernbichler.at/72387495804.pdfIn PDF document text
    • http://toyotarent.hk/FileData/ckfinder/files/20210904_5640A00F3FDC8089.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/17687944546.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/tebusezupikafut.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/17434714572.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614690e21983b---zebexa.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_off0000e59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 20156 bytes
SHA-256: ede3382bd6c9abfbd5cda05d1bd87a8cf85ed5fae32458f75c7edd3688166a43
font_01_sfnt_off0001196b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1196B 11308 bytes
SHA-256: a4dae825101136bd31296045cd7ab72ddfdac0415c00a513e328eb6702f62bc6
font_02_sfnt_off000133a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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