Malicious PDF — malware analysis report

Static analysis result for SHA-256 5866928b1160abfc…

MALICIOUS

PDF

123.7 KB Created: 2021-05-07 06:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c291b3409739b2057968e307f319dad SHA-1: db2cbe4ae40ce26d354b27b04495c3fdfabae7a7 SHA-256: 5866928b1160abfc42bdb5e065e66b0d8ea4b24c966621e59c721402d8cf6f32
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain associated with phishing and malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into downloading unwanted software or further malware under the guise of a driver update. No scripts were extracted, but the presence of a malicious URL is a high-priority indicator.

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://resalured.ru/strik?utm_term=samsung+p2770hd+driver+windows+10
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5fd61d77e1ee0.pdf
    • https://cdn-cms.f-static.net/uploads/4427498/normal_6044fb1d88a72.pdf
    • https://cdn-cms.f-static.net/uploads/4482638/normal_5fd92f0f7183f.pdf
    • http://limaxinsto.xyz/canon_powershot_a560_advanced_user_guide32w8k.pdf
    • https://cdn.sqhk.co/rorijujulo/9ihYOqR/helicopter_rides_nyc_cheap.pdf
    • http://gouliwer.online/fipedupobibevagoketalokle2qp.pdf
    • https://cdn.sqhk.co/boxadiweteve/jeMAhhl/edge_of_oblivion_alpha_squadron_2_full.pdf
    • https://cdn-cms.f-static.net/uploads/4460966/normal_601ce1c27a725.pdf
    • https://cdn.sqhk.co/rabataxuvax/igeaB8e/gegatenijuvavawapamuto.pdf
    • https://cdn-cms.f-static.net/uploads/4501045/normal_6030745ddbdd2.pdf
    • https://cdn-cms.f-static.net/uploads/4453550/normal_5fd6296b219a1.pdf
    • https://cdn.sqhk.co/wumigapinido/bihSvlU/93118993395.pdf
    • http://itclick.pro/72774270249ahbbk.pdf
    • https://static.s123-cdn-static.com/uploads/4467571/normal_5fe4ffde083c8.pdf
    • http://wssummer.space/como_rechazar_una_oferta_de_trabajo_del_inem7y1j5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/56e2f428-408f-4f39-a756-abf6e47f4c2d/11062389245.pdf
    • http://gesubonepalit.epizy.com/learn_python_the_hard_way_book_free_download.pdf
    • https://uploads.strikinglycdn.com/files/cebc382e-b5f8-4be7-b10c-222aca636a1b/duluv.pdf
    • http://tiguvazigavis.epizy.com/b._form_course_details_in_tamil.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_off0001900e.bin
a3e7d1c340ab2303158df07b5e13730b76d67a872db58b46b325047ec3dfe908		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1900E 6004 bytes
font_01_sfnt_off0001a46f.bin
6e54cc289b7f2978261203ff2850f84bbab0a52977b0a25ccd2775152d42c893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A46F 10944 bytes
font_02_sfnt_off0001ca00.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA00 16204 bytes

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