Malicious PDF — malware analysis report

Static analysis result for SHA-256 077440b21872ae57…

MALICIOUS

PDF

66.8 KB Created: 2021-06-03 03:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02865a6751a1e52d947f96a43ca8489d SHA-1: 560437fc526a9e8d8b98293535baeab051a71d79 SHA-256: 077440b21872ae57365c1395cd9452c9bb1b411dbd1d34649a13e0e0078cbd80
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic suggests the document is designed to trick the user into calling a phone number, likely for a scam. While no scripts were extracted, the presence of embedded URLs and the overall detection profile point towards a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://wastran.ru/uplcv?utm_term=dc+unlocker+username+and+password+generator
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ba3dd6fd8---59611760242.pdf
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a2ee7796e---22855435537.pdf
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/a693570a1da709ce3f0bacf933e112fc/15475926720.pdf
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d935904e10---wutetizu.pdf
    • http://banghetretunhien.com/media/ftp/file/widewu.pdf
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e3c7b1b44---62598862416.pdf
    • https://miguktour.com/FileData/ckfinder/files/20210603_B6AA9B9A2113CAC0.pdf
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6ac56091c---tenasaromozaketumezivo.pdf
    • https://anmimar.com/royal/userfiles/file/83326778982.pdf
    • https://ayurvedaemart.com/uploads/file/xagipenisitujobuzebuvisis.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3cbc6fe23---65354818842.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882a6995e2e---mejozejemabafujuxasatilo.pdf
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b05fa1119b6---gizos.pdf
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ce0696bdd---vazikopokaxoraviteme.pdf
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/7b1df009bc80b64b5c2a6ca1beba983a/49485866195.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c90e.bin
0da74e60803a45fc77de03132aa2f4c01d21e7b7255cf912ca93ab3003dbe555		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC90E 5548 bytes
font_01_sfnt_off0000dbf0.bin
d91fbee28181d64fadb47fad83bbabd93c35bde1124426d443db6ffb6e09a452		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF0 10040 bytes

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