Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d19cc8f0bcb0ab3…

MALICIOUS

PDF

73.7 KB Created: 2021-02-11 18:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6c1b8a9590aa395332ae7f990349a98f SHA-1: 9545239b7eca85156eb9b4c93dafafb162e9d9a2 SHA-256: 6d19cc8f0bcb0ab3549e228c21010837595bccf1c101107965617b0f0cb17cf8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URL 'https://jottigo.ru/wix?keyword=audit+form+template+excel' suggests a lure to download further malicious content disguised as a legitimate document. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=audit+form+template+excel PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379731/normal_60065aa26f65d.pdfIn PDF document text
    • http://austritkfa.com/adjetivos_calificativos_ejercicioso2cfl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_6018456cad06b.pdfIn PDF document text
    • http://lovelid.xyz/bc_rental_agreement_formkjkrd.pdfIn PDF document text
    • http://limaxinsto.xyz/argon_cations_anionssiq7h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404723/normal_6011c463f2dc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5ff1c2b101111.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5ff925b60db72.pdfIn PDF document text
    • http://podipotekoi.ru/rsum_de_la_ferme_des_animaux0flth.pdfIn PDF document text
    • http://persequenteamsohbet.com/aditya_verma_teaserxldki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_601db296a4fe8.pdfIn PDF document text
    • http://mgacessoria.online/roxekotifetezugom977o.pdfIn PDF document text
    • http://domsale.xyz/concepts_of_genetics_solutions_manuawu6wu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_5fd3816a3a93e.pdfIn PDF document text
    • http://shoop-fe.ru/zopokogigewurabuwuk4i2f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383471/normal_5ffd6e7d100ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/36186479160.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/rezokododowelulojodogoz.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/nabuxuxetuzoki.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/2441333290.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/nosubufanenujinud.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F9 4956 bytes
SHA-256: 6f70d560c028d2fc4692051c01c35dd6f9a023aa46f4a91b15c8a3715d77e618
font_01_sfnt_off0000e8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D7 10176 bytes
SHA-256: 82a202c698e6b750154fd0590d8c9314f43f187d81ce3f4c352bbee198e28900
font_02_sfnt_off00010b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B81 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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