Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9e3461c94843a6…

MALICIOUS

PDF

93.0 KB Created: 2021-06-28 13:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ffddfdfd3c6dd97d49e738f2d6bdaa5b SHA-1: 01d2bac7c7aea3216bd945822f6bd2eb096c96ff SHA-256: fa9e3461c94843a6dbf7066c4c58f74f4f6c7337d5c07fca5991beda5989b93b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting sites. The primary purpose appears to be directing users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/9c63a5a7a66d8d9c9f0fecfa2a0e41ec/80640859571.pdf In PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160894f3846c67---92253830908.pdfIn PDF document text
    • http://sattamatkapatti.com/userfiles/file/43057327886.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/86cb468f432cd8baf293ce7893c979d7/71208837528.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/dazupinijadijunabed.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/xinudig.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/77a3e8d575fd7e03b76f1d680939805c/46259279904.pdfIn PDF document text
    • http://jump360.co/upload/files/20210604135254.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/fiweporukufo.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c9842b1ad---37511678090.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-4-30/20210430021503841775.pdfIn PDF document text
    • http://imi.vc/upload/files/20831637452.pdfIn PDF document text
    • http://merlegdoktor.hu/tmp/fobopiresedolokapodidete.pdfIn PDF document text
    • https://arredamentigiacobbe.it/file/71182890939.pdfIn PDF document text
    • http://amdind.com/userfiles/file/68433313651.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160758bbe371b9---mazelutululadibuzudo.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/dbq5m2b9v1adm4gftv7006kg10/gesojotugiluvamojumorega.pdfIn PDF document text
    • http://huiking.cn/uploads/file/160807294954.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/gunepakalipan.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4bbabbaeed6bc8a11f154695327d2fab/gakedonoleluxunupo.pdfIn PDF document text
    • https://pacpartner.net/images_client//imagesfile/12186741637.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16094acbcacdfb---tizages.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/a464f48ec09884ad41fa7ef2307be0b5/44715459822.pdfIn PDF document text
    • https://nepalmicrofinancesummit.org/userfiles/files/fimuzamikesebalaku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=crescent+moon+meaningPDF 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_off00010716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10716 18284 bytes
SHA-256: 4159089509500baef3cba2e0c64228438de857d19ecffbcabd8b45cc36ecf681
font_01_sfnt_off00013684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13684 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E9B 10560 bytes
SHA-256: 6a24a9204bdd9bf76759a2ca7734853dd28b9d614521fd277a7336e1a12414a7