Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e769cef00b00f5c…

MALICIOUS

PDF

85.9 KB Created: 2021-03-27 19:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 271ccce8a2a26f54476545f77bb6d01b SHA-1: 88f44f50467f8e9222946941a08860e171c245c8 SHA-256: 7e769cef00b00f5c10d9fad0ca34b0d33b17bd436c8592f033e1af4c4ec3269e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a technical document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The primary IOC is the external URI pointing to a suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/award?keyword=microscopio+optico+partes+pdf
    • https://cdn.sqhk.co/fumazuri/fRPji5V/78662457027.pdf
    • http://susurrus.space/sebetaburabuvagsp046.pdf
    • http://foxilajat.sportsontheweb.net/mezuridu.pdf
    • https://cdn.sqhk.co/saseponirifa/jagfjge/64101000485.pdf
    • http://probkin34.xyz/how_to_use_samsung_camera_to_translateafs6m.pdf
    • http://busoxafe.22web.org/emulation_ritual_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e89d212a-ab55-4073-9ca2-9b03b3b8f310/singer_stylist_543_manual.pdf
    • https://uploads.strikinglycdn.com/files/902d26cc-690b-426d-a3f2-27168c538bb4/97354103814.pdf
    • https://uploads.strikinglycdn.com/files/7e30cf9c-8a92-4c5c-aaf3-5e808c7960b6/lekigevekurekefelopo.pdf
    • http://najizomixa.rf.gd/62019129135.pdf
    • http://lafagelupuf.myartsonline.com/house_of_atreus.pdf
    • http://dikumetuvo.epizy.com/factors_affecting_biotransformation_of_drugs.pdf
    • https://uploads.strikinglycdn.com/files/59a4d037-749a-4d91-ad64-9ba464abb2d0/clases_de_funciones_matematicas_y_sus_graficas.pdf
    • https://uploads.strikinglycdn.com/files/f64e03cf-0e50-4117-83b4-4f770bb67440/1862723919.pdf
    • http://ribigilubawedom.rf.gd/cisco_ccna_data_center_study_guide.pdf
    • http://magikid.epizy.com/78302693156.pdf
    • http://kejusekijo.epizy.com/90653020629.pdf
    • http://viwekamopib.rf.gd/mafuzuwaxobenidoja.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa51.bin
6d643d4611d94abc44e9d51d777b14a299799b359f476ef579f679fa370c0811
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 5120 bytes
font_01_sfnt_off00010bd9.bin
cee605e032900cb2282bc90c88337170612e30231896246ea59f818705fb2491
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 12312 bytes
font_02_sfnt_off00013414.bin
116e1aefc1bdc9fdbdc8bc4ca32ed8fc2a9096b6ae60b76e258fcc2d5524df3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x13414 16112 bytes