Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b5a1d08070c44e…

MALICIOUS

PDF

73.1 KB Created: 2021-07-16 13:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9f7d4b1c47e2813649003e95f426b549 SHA-1: b06938d3f770ea2ab4eae642b265c5be9eef8752 SHA-256: 29b5a1d08070c44ebb64e3080b32fe5dabb9734e50b7dff5816d445823cd9513
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML and ClamAV, exhibiting characteristics of a callback phishing lure. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated, but the presence of external links and the 'SE_CALLBACK_LURE' heuristic indicate a likely attempt to trick the user into initiating a phone call for fraudulent purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://inwebjor.ru/uplcv?utm_term=the+idle+warriors+pdf PDF link annotation
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/ff6a9efa6738ccd2de8677809f004a54/sawufamebederemep.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/015412d6247cb9519aa40ea72ca4d86a/vawevutipudutumopibesevu.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607174616b32e---74069725470.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/5359561954.pdfIn PDF document text
    • http://baloneacessorios.com/_upload/file///sexitetalalifiduxaden.pdfIn PDF document text
    • https://webfox.net.au/wp-content/plugins/super-forms/uploads/php/files/c21c2f401ee1a793b7da990f2318d9b5/kaxeweropodapojajufupeza.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b67ae4341fc---94361896776.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/29ef76d87c6ab85750843e847440c02d/beberukuvodubugareka.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/a50d915ef56ffad888bb0c2eddb8130d/41867860431.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/85c01dd8c6c28cf1bd8bae9f6a35bd66/9959039770.pdfIn PDF document text
    • http://webbuilders.com/files/file/12003530189.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/bomupunubalif.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd53b99c194---titawavinu.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/rerorikokonitodub.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/lareweb.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606d04f66876c---2697358160.pdfIn PDF document text
    • https://thietkeweblongan.com/upload/files/69679488054.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609d33ca28c5f---woliledexalegetukezoxim.pdfIn PDF document text
    • http://healingtown.org/userData/board/file/vavivisoxudazisoraxijime.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607b59ac9e6ef---tirinepuzedujiwirimibu.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/bcc6dsfb8n8hjl39fp108ntsud/20370478791.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094c135392cc---15537961854.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e7e43aac4---79951368300.pdfIn PDF document text
    • http://szsahsh.com/uploads/files/72582311795.pdfIn PDF document text
    • 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_off0000ba4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25D 16836 bytes
SHA-256: 87bfa956e2af9cc6de4845b1603aedada7cf77b0a4dcc0d3d381172c5f7e09cf
font_02_sfnt_off0000fe1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1A 10440 bytes
SHA-256: db5c2c4fe841784eb7ea5d35523467b30d4ff1d40edc0ab4168474bd59e3b4b0

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