Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee46e94429995fc…

MALICIOUS

PDF

81.6 KB Created: 2021-08-19 19:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a032f586b5f235b7bf251e1cd235d896 SHA-1: 0680c1f9343b0cc04b7cbb399be333c68f26fe1b SHA-256: 2ee46e94429995fcc6d1580c4f961784696f88588e3944e72ad27650f7d3eba4
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links pointing to compromised WordPress sites and other disposable hosting, indicating it functions as a link farm. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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 http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160af893e0da82---17334747502.pdf In PDF document text
    • http://consol.hu/images/uploadedimages/file/74047761006.pdfIn PDF document text
    • http://abc-tel.ru/data/File/79083291475.pdfIn PDF document text
    • http://allasclub.com/campannas/file/vifenavazodajemigaxafo.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b48991bb035---darosufudaxeledozi.pdfIn PDF document text
    • http://tingyi-bnb.com/CKEdit/upload/files/jozaremusedaxumu.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/guzuzeja.pdfIn PDF document text
    • http://whalesart.com/uploadfile/file///2021061414524890.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/nuburesefajemevixex.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/24197b1fe9acff620e79094662888818/62154926080.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/faboveji.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080292e60e05---19320550838.pdfIn PDF document text
    • https://truckforceone.com/upload/editor/file/wojonapisolikixiwufeluter.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/27459162073.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/73415877938.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/mutigu.pdfIn PDF document text
    • http://www.humillacionyestrella.org/ckfinder/userfiles/files/14758422769.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/pitamixusaj.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/25217364601.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/52253273369.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/nebotosexutez.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160881c75b3a1f---18796648472.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8bd2c36ff---25881400028.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/joweninaxajowidezule.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160738fd8d9760---547387578.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///pavuzofonuju.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=lippincott+farmakoloji+6.+bask%C4%B1+pdfPDF 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_off0000d596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD596 18568 bytes
SHA-256: 87f16917b9e00000be1678e6012650727e8148b51891d2804990c450f13a6235
font_01_sfnt_off000102be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BE 11248 bytes
SHA-256: dda2fadae57adf0e66676157f605daf08005899a8662140e9ba1af266ade8a24
font_02_sfnt_off00011ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CCB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1