Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c492614836a1742…

MALICIOUS

PDF

73.4 KB Created: 2021-05-10 05:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc14cd85ee6be1983f65f0662cd80430 SHA-1: a10325ac0226bbb5d74d6a810f1ac6a0a174d44b SHA-256: 2c492614836a17423412b316c7cd96f137f839c7bf40da5dda4a044886f33d06
104 Risk Score

Malware Insights

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

The file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of external URIs and a visual download button suggests a phishing or social engineering lure, likely attempting to trick the user into downloading a secondary payload. No scripts were extracted, but the PDF structure and embedded URLs point towards a phishing campaign.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://medvor.ru/uplcv?utm_term=offline+address+book+outlook+2016+mac
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/h37s3ohn53ho6415lf320l9295/54852750921.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d0e897a54---72967990537.pdf
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/7462ebd512a8d8bfad23b8e806fd1626/6526823156.pdf
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607493205c196---ligevesaxoza.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607374bba05f5---wawedizafekegolinak.pdf
    • http://anhuicrew.com/upload_fck/file/2021-5-1/20210501063116931586.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606efa874a4aa---vejirokew.pdf
    • http://phantasos.org/userfiles/file/92285199963.pdf
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/05916ae96452aa42a1ae73c6f6481367/88792539247.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/242b99d841b60293ac4ab36ac9137ffa/943645483.pdf
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/3f296d868e8bcb8b9c6a4c175adb0817/82219335887.pdf
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607da9fb4a72a---14675639338.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608bb53c1849c---bozij.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607312c993a3d---66075330637.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_off0000de5d.bin
4aebe0adda9788f593aa0ab3bfe1e73cb2b5501b4b9c06b4cb72985c9530a6d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 5880 bytes
font_01_sfnt_off0000f24e.bin
00d91cf8ecadbe535cf539b1407595e52794031b577466bd5684238b4157d489		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 11280 bytes

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