Malicious PDF — malware analysis report

Static analysis result for SHA-256 c214ce7f0f354624…

MALICIOUS

PDF

79.9 KB Created: 2021-09-12 01:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 894dd7512d3e7f6bec81fd07e53425f3 SHA-1: db7ee44f17e28f00667b394d754aba3293a8c3ca SHA-256: c214ce7f0f3546240f3a34d8abe31f02dca1b9d6d181e8d9858ee22c35018922
276 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits multiple high-risk lures, including payment redirection and password-protected archive deception, strongly suggesting a phishing or business email compromise attack. The ML classifier and ClamAV detection further indicate malicious intent. While no scripts were directly extracted, the document's structure and embedded URLs point towards a multi-stage attack designed to trick users into downloading malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://chasehr.in/userfiles/file/zakelafoxazipe.pdf In PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/89310342641.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9deb4af39---8558963859.pdfIn PDF document text
    • https://resortweeks.pro/userfiles/file/wigowogaralazik.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/zexafirepexupitosuramig.pdfIn PDF document text
    • http://dkind.net/userData/board/file/53229799677.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4c21277ae---97138898086.pdfIn PDF document text
    • http://www.rpv-drachten.nl/files/file/kowezusejivada.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/40755900950.pdfIn PDF document text
    • http://tradotel-riviera.com/file/tazaxarisoraduzojedajumu.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/gejalazujo.pdfIn PDF document text
    • http://klubalfa.org/img/userfiles/file/simawonufipuxok.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613188ea4c6ee---mexuninawuwival.pdfIn PDF document text
    • https://www.vignolaweb.it/ckfinder/userfiles/files/rotuvojozelikurunidipevo.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/77616745314.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/ca46437ae34c6238f0fbf82aa4203e6f/kiwit.pdfIn PDF document text
    • http://moskvaznaet.ru/upload/files/84807859286.pdfIn PDF document text
    • http://morecoredesign.com/images/imageUps/files/kaguxiripegibuvi.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202109070212502424.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/bajuzuzinufejaxomiwo.pdfIn PDF document text
    • http://ncteonline.com/userfiles/file/16213527741.pdfIn PDF document text
    • http://fuhua.tumujike.com/assets/upload/files/202109051208378078.pdfIn PDF document text
    • https://www.truck-transport.com/ckfinder/userfiles/files/fipifasewefojometagedog.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/39098777521.pdfIn PDF document text
    • http://szpitalstrzelin.pl/userfiles/files/sowokeba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=dr+fone+crack+email+and+passwordPDF 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_off0000d359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD359 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB70 10864 bytes
SHA-256: 14f488c37909953b700286a44d604a6a177f2afe6f8f65d8341d5b18337f4e0a
font_02_sfnt_off0001047f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047F 17752 bytes
SHA-256: c2f13db94c90e80e5a1f0df561e233cd01d8f64b0c6ba93eecd2fa17127749b5