Malicious PDF — malware analysis report

Static analysis result for SHA-256 47234219387311f9…

MALICIOUS

PDF

197.8 KB Created: 2021-08-12 08:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 85f35c7e75a0f57aa3cf1ad44d935c7b SHA-1: fe9877741d19b5f05560b2c34ab39578b88bf1c6 SHA-256: 47234219387311f94f489234fb691ca97863c1f67dcdc6e966d94f93843f682e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as a phishing attempt impersonating Walmart. It contains multiple links pointing to external domains, some of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to steal user credentials. No scripts were extracted, but the presence of numerous external links suggests a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=the+binding+of+isaac+game+unblocked.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/ap7si0ugge7kujj4op0gn0te9k/42768800113.pdf In PDF document text
    • http://aucoindeshalles.com/menu/file/73279006003.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-7-30/20210730032728771664.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/podezagiwasar.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/19110385985.pdfIn PDF document text
    • https://nieruchomosciturystyczne.eu/files/file/37310494670.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca64830744---68873198072.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16099d8f46ef09---varebiroteto.pdfIn PDF document text
    • http://alde-pace.org/ckfinder/userfiles/files/kokolazipefadidukunu.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c50fe83376c---sigobixorimazuxutuxiti.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/a3b04a0fe757bbc32eb56887e963cfc5/62219837801.pdfIn PDF document text
    • http://sanruou.com/app/webroot/uploads/files/57550477193.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/0b1d2c7c903d4f5dc8bf85b6b1227f42/46957444175.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/buzabituzafezomazisodix.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/wesosazipelekoxawiser.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b79da33f9---wuvenifavopilanadulevuno.pdfIn PDF document text
    • http://pn-tech.net/userData/board/file/mikobegi.pdfIn PDF document text
    • http://consade.com/userfiles/file/kiwijavivinirafuse.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160701b0af1a4a---87615574696.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/fudexabiz.pdfIn PDF document text
    • https://krono-original.vn/Images_upload/files/5263973989.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608854353445d---sogozoxarekukakevorexezuw.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607700af69785---35339333175.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/54903575009.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/vupubupoxaratilenabapare.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=the+binding+of+isaac+game+unblockedPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A0A 11020 bytes
SHA-256: d1ae4fab772c118cff3d07e98c4c14dc6db17d9aa8ef8d32764fffe27a496894
font_01_sfnt_off0002b33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B33D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002cb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB4A 3528 bytes
SHA-256: b30ddb81958fc6d3bdaa1dc6678ee33f896aac21096dbe82d345e2d24507523d
font_03_sfnt_off0002d8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8CB 17968 bytes
SHA-256: 9d0de1eac0dbfa996c7d4c097bc14d193e1cebeaf0beb434bc5822b5c36361dc