Malicious PDF — malware analysis report

Static analysis result for SHA-256 737e084d91e24164…

MALICIOUS

PDF

80.3 KB Created: 2021-03-11 15:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eeb19312629bd49f6dc94c620da6c7fc SHA-1: 1ca11fd5a778259b09c250faca6ba8dc690d7491 SHA-256: 737e084d91e241649659ec47dfef2aeac61ee1b1bafb78f2294a38bb7443af80
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. It contains an embedded URI pointing to a suspicious domain, likely intended to download a second-stage payload. The document body, though corrupted, suggests a lure related to job applications, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/123?utm_term=job+application+letter+format+word
    • http://feziweninepiv.iblogger.org/icao_annex_19.pdf
    • https://rifopiponekusu.weebly.com/uploads/1/3/5/3/135346758/zunaso.pdf
    • http://pogadai.xyz/venoderavogaluwixosegodag2hxar.pdf
    • https://cdn.sqhk.co/zasemewiti/FIjgS5s/57974574032.pdf
    • http://sallely.xyz/mind_control_delete_ending6m389.pdf
    • https://lepitosamodovax.weebly.com/uploads/1/3/4/3/134335454/05ac3b18.pdf
    • https://cdn.sqhk.co/vukupamita/jiaSQjb/79433727899.pdf
    • https://koxowuberes.weebly.com/uploads/1/3/1/3/131379375/mejokozodizaxedas.pdf
    • http://yarrebitteh.online/rutawewo7jju6.pdf
    • https://famemizi.weebly.com/uploads/1/3/6/0/136006686/1945789.pdf
    • https://cdn.sqhk.co/luvunugoz/6xjgcje/72893580993.pdf
    • http://ca-manalapan.space/second_interview_thank_you_letter_templateibkfl.pdf
    • https://dusivasawomila.weebly.com/uploads/1/3/4/6/134660852/2462667.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0f31e940-48d7-4ac3-8bf8-5db7a9e644e6/best_grounding_exercises_for_anxiety.pdf
    • http://gapogup.epizy.com/xilezukadogedewuga.pdf
    • https://uploads.strikinglycdn.com/files/4a06f124-1f2e-4ce1-b647-0244aaaf16fd/xeratajinerada.pdf
    • https://uploads.strikinglycdn.com/files/940f36a5-b308-4ebb-9bb4-6fb081dbeb80/hp_laserjet_pro_400_m425dn_driver_download_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/2899777b-8078-4f65-8ce4-29b2f9cafc64/python_list_length_method.pdf
    • http://zumaborelap.rf.gd/the_elephant_man_play_analysis.pdf
    • http://molodetagako.epizy.com/the_5th_wave_final.pdf
    • https://uploads.strikinglycdn.com/files/64de6b7d-146f-4313-abd2-5b9c7ef64b83/wujusejeluxakaboju.pdf
    • http://jedikofip.rf.gd/free_wedding_stationery_templates_uk.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc91.bin
be2d643489723aed4fe0c86f06c01a9355f62aa5c1cfd8a4083ee2be4e516fe1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC91 5344 bytes
font_01_sfnt_off00010eba.bin
3f3c5b51e6bb8421852633c9f76634eacfd56f20c9af6ad5e2406cf2827a2723
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBA 10712 bytes