Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0958d4214daaea…

MALICIOUS

PDF

85.0 KB Created: 2021-07-20 11:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 97d256a9f4105e92a62165207bf96192 SHA-1: eb64d85bb98d4a12f2fbbc0aa45d99b9b7a99c24 SHA-256: 2f0958d4214daaea43ee7cf612b1ec22ec392c7f95930cc450e0f36efb580bdf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on compromised websites. The primary purpose appears to be directing users to malicious content through a chain of compromised resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://andrejc.si/files/file/zoxivaxasojeguxaxe.pdf In PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/5uid70ffh5kiajgaubt4b0i6bs/5233630323.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/b30c0fbf15eac2ad7ca5e54ba78e1a4a/jiwalijaxugivevosig.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c131ae5a2ec---natefegunune.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/vasidajuverobupopazati.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/9risql46s1kfj8cdrugc4121df/palizaluribopujaviwasire.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/3580931868.pdfIn PDF document text
    • https://turbooto.vn/upload/files/mujijumoro.pdfIn PDF document text
    • https://tootooair.com/FileData/ckfinder/files/20210716_AE2E86C80937307B.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/kuep8ntujrjjha7b8ha089m1ih/toxufewaxisevegu.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/nisakaw.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a88a8e74417---71262838721.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab92ce1c0cd---61446571809.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/tebujufulebitofuvud.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/30338425206.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160edd6408f026---28017129133.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/be31b973c50fffe27fbe042baa581a6c/negupixoluruvipatexapulu.pdfIn PDF document text
    • https://nomaquito-travel.com/editor-images/kudobemopakekam.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160adaa9a1f676---xafiwuwojoxuvuwikilu.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/5c8c15d6u63c7gsmal253dl0sm/68921686011.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/59406874119.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd41a8e0c1---tavajebinurug.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/bukiwamubigibawuludile.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/a3f08e7c43b27f3506ef833ea835fd4f/42136194965.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=girl+and+horse+nudePDF link annotation
    • 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_off0000eab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000102ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CE 10388 bytes
SHA-256: 179dc61c54b9ef909008312d509aa402f5a9798f51f42cc126bd51f7ce0dca95
font_02_sfnt_off00011a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A27 16876 bytes
SHA-256: b2bf5ef62569613e0fee24edd4618569d0dba613e06eeac4a7d7e5d50810cf93

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