Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ada72266993ded0…

MALICIOUS

PDF

80.2 KB Created: 2021-04-05 00:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 660f85fe3618bb469e97ef652c72510c SHA-1: 902b7144675e38da7e9e1e1594d5a567e4974ef9 SHA-256: 1ada72266993ded0b4cb733f24d815c729aec214bdaeb2cf5bc7671cc262ebc2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as an external URI and flagged by ML and ClamAV as malicious. The document body, though heavily obfuscated, appears to contain search-related terms, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of external links and the high confidence malicious classification indicate a likely phishing or downloader attack.

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=kenwood+excelon+dnx892+reset+button
    • http://limelusefi.iblogger.org/weruxitopoleramufamud.pdf
    • http://datulosuwila.iblogger.org/travel_voltage_transformer_converter.pdf
    • http://wulutapebime.getenjoyment.net/astm_e8_04.pdf
    • http://nebokamuwego.iblogger.org/kesepovefixanutim.pdf
    • https://cdn-cms.f-static.net/uploads/4373992/normal_60611da699696.pdf
    • http://copytoshka.ru/22667222630ztgk.pdf
    • http://misstourist.info/genimipavemodoli5cg6t.pdf
    • https://cdn-cms.f-static.net/uploads/4475382/normal_6064fae272a8a.pdf
    • http://hookup756.fun/atresia_esofagica_congenitajtl6k.pdf
    • http://femojel.iblogger.org/72519692402.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jalebuvubo.myartsonline.com/possessive_noun_worksheet_grade_1.pdf
    • https://uploads.strikinglycdn.com/files/833486eb-981d-4c88-8ea9-e2cd0f797619/jaxon.pdf
    • http://puwadokemizogu.epizy.com/an_introduction_to_boundary_layer_meteorology_download.pdf
    • https://uploads.strikinglycdn.com/files/457a8c21-c372-42e9-971c-46706f0608a5/7635003332.pdf
    • http://dojidusajotat.epizy.com/larepa.pdf
    • http://didaduxazej.epizy.com/sense_and_sensibility_chapter_19_summary.pdf
    • https://uploads.strikinglycdn.com/files/d8a2259d-a8fc-43f1-987c-2e0107ec8ba1/nulagujukav.pdf
    • http://jipiluwokefeke.rf.gd/65239494532.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_off0000e1b5.bin
ac26bd2d063b110455cbe0b9b20a205dbabd8e64c7ab597593635b35fbb79304
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B5 5472 bytes
font_01_sfnt_off0000f47b.bin
a80d36a6be4c91c85bc4c9edea52eb94f77422a802e506e7890b7ded2ae5c263
pdf-font-stream PDF embedded font (sfnt) at offset 0xF47B 13172 bytes
font_02_sfnt_off00011dfd.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DFD 16204 bytes