Malicious PDF — malware analysis report

Static analysis result for SHA-256 38af42a1a04e8e9b…

MALICIOUS

PDF

150.4 KB Created: 2021-04-18 00:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36532071d97dbe27e9f837230ec0ef50 SHA-1: 78bdd1cb275492c25061b74b928c6eedecd785d5 SHA-256: 38af42a1a04e8e9b2fd50fe1a67822363a4727d74bf2a05c916b9689c8e429ba
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, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=teor%25C3%25ADa+de+conflictos+entelman+pdf
    • https://kenojulovananav.weebly.com/uploads/1/3/4/0/134016885/duveruguka_jawisogo_dulegofet_bewit.pdf
    • https://gelupolo.weebly.com/uploads/1/3/5/3/135314506/e7a7834e25.pdf
    • https://fisokupavunimi.weebly.com/uploads/1/3/4/4/134469682/vobizule.pdf
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/3492358.pdf
    • https://ketafimevudo.weebly.com/uploads/1/3/1/6/131637081/nodetemulipuw_kofigenuzuwot.pdf
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/1251314.pdf
    • https://xiwajuropoji.weebly.com/uploads/1/3/4/3/134371127/fijam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sivawilowun.rf.gd/95800816859.pdf
    • http://fisuzes.epizy.com/python_3_for_dummies_2018.pdf
    • https://uploads.strikinglycdn.com/files/7737c81e-1180-4b63-88cf-89bcd9f6ee2d/will_insurance_cover_prenatal_massage.pdf
    • http://bolunivagoxel.epizy.com/rebiderikebefosarujif.pdf
    • https://uploads.strikinglycdn.com/files/7a3be802-45d3-47f3-bd6c-13d5f79e3d91/spanish_to_english_dictionary_book.pdf
    • https://uploads.strikinglycdn.com/files/d49733d7-4546-42bc-bb13-e078cadc2f2b/what_does_a_information_technology_support_specialist_do.pdf
    • https://uploads.strikinglycdn.com/files/70259900-1a86-406e-8927-cec8cc34e2ad/persona_4_golden_100_guide_steam.pdf
    • http://mujujum.epizy.com/amliorer_sa_confiance_en_soi.pdf
    • https://uploads.strikinglycdn.com/files/62332aee-88f9-47b3-bc2c-80c4b48abc46/35848998728.pdf
    • http://gowesano.epizy.com/33122552084.pdf
    • https://uploads.strikinglycdn.com/files/c16ad057-26d6-47b0-8cf1-7c93f29687c8/fimaj.pdf
    • https://uploads.strikinglycdn.com/files/1a833760-a557-44b4-97af-86ef1440b21a/how_do_i_connect_my_ring_camera_to_wifi.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_off00020c84.bin
c9b332c8a605b1dc3d31bb8f68ceb6ccd6308b3208deff9d7a72bb5791b7a627
pdf-font-stream PDF embedded font (sfnt) at offset 0x20C84 5304 bytes
font_01_sfnt_off00021e81.bin
ff9a494335d805e98d149484549835e0c7224b931b386c144e658b9b8c2dc11a
pdf-font-stream PDF embedded font (sfnt) at offset 0x21E81 13576 bytes