Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b7e58964cfbc7f…

MALICIOUS

PDF

80.3 KB Created: 2021-09-20 20:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a4304a1dfe4526c15d36c07ed13537b2 SHA-1: d48578cc0e542e19d54ed2be076c6c97e9fa0cd8 SHA-256: 60b7e58964cfbc7ff99acc382aa5910ec9dfc93709120b3d97be3864374235a5
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. The 'SE_CALLBACK_LURE' heuristic indicates the document attempts to trick users into calling a phone number, consistent with phishing or tech-support scams. Numerous external URLs are embedded, likely serving as lures or download locations for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • 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://laborke.ru/uplcv?utm_term=friv+ice+cream+1 PDF link annotation
    • https://movimientofamiliadejesus.com/images/uploaded/file/85740502171.pdfIn PDF document text
    • http://studiophotosfashion.it/userfiles/files/nusojivilufoxobupika.pdfIn PDF document text
    • http://edisonprivateschoolbeta.com/cote_dor_import/admin/ckfinder/userfiles/files/katoratitonexijakuj.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/r3mb32u685g44999h2plsufs36/zitojunerivumedujebosez.pdfIn PDF document text
    • http://www.tractortools.cz/ckfinder/userfiles/files/weregatof.pdfIn PDF document text
    • https://expobar.vn/app/webroot/files/images/pages/files/puzufotejonezobifoj.pdfIn PDF document text
    • https://alkoplast.rs/files/xubapatuvizafebozubekifed.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/161315ab88f4f4---dewivodedor.pdfIn PDF document text
    • http://afslab.asia/upload/files/dunexokuzebikuru.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/xopexilakil.pdfIn PDF document text
    • http://advertisingreports.info/assets/ckfinder/core/connector/php/uploads/files/88706266285.pdfIn PDF document text
    • https://airbays.com/userfiles/file/26957138645.pdfIn PDF document text
    • http://enovosti.info/ckfinder/userfiles/files/dibodupag.pdfIn PDF document text
    • http://myslizdrave.com/soubory/84286498752.pdfIn PDF document text
    • https://menlopark.com/wysiwygfiles/file/rumufenajoxubovumemanobud.pdfIn PDF document text
    • http://hrdiborice.cz/erucom1/files/files/96175573699.pdfIn PDF document text
    • https://eastmanllc.net/ckfinder/userfiles/files/1915783691.pdfIn PDF document text
    • https://trouver-une-ssii.com/img/pics/files/nodusewan.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/60594328977.pdfIn PDF document text
    • https://www.groupe-coelho.fr/ckfinder/userfiles/files/mumigewodipuwerunonidude.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/mizezarebomajuwuzipo.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-9-19/20210919124521408320.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/bekasitu.pdfIn PDF document text
    • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/monaxosajekorajuvarofe.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/risedel.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_off0000d6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D8 17972 bytes
SHA-256: 408401031eb376f76eca256c8438d60c05f9cb374bc4e0ee3c57af945625222a
font_01_sfnt_off000105f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0E 9948 bytes
SHA-256: 4a654c441f94644d914850bcaa58e828f6496e1967800147b6e43e73f57186a0