Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c541a1f89c01400…

MALICIOUS

PDF

82.4 KB Created: 2021-03-17 23:31:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82083a4430d611e2151d9d7543d1084c SHA-1: d0c17d4f3107946e24712678fa5a9531d6f676ac SHA-256: 6c541a1f89c014008c91130d170e6c85151aee2dc4abc10b5c0e0177463fcdc8
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 attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious site. The document body, though heavily obfuscated, appears to reference a sports match report, serving as a lure.

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://soxebez.ru/123?utm_term=man+united+southampton+match+report
    • https://cdn.sqhk.co/bodorosuzuta/hijbhhc/54427123127.pdf
    • https://cdn.sqhk.co/zatovafer/did89gi/d_d_5e_versatile_weapons_list.pdf
    • https://cdn.sqhk.co/jarebomu/jcJ7Aig/28688908647.pdf
    • http://venimetifinodi.iblogger.org/fafiluvobozodadawaxurus.pdf
    • http://vomuniwawan.iblogger.org/ghatak_bengali_movie_song.pdf
    • http://mukifufiri.iblogger.org/xesilexujupebe.pdf
    • https://cdn.sqhk.co/wenisuvuroju/JMtwche/cuba_covid_travel_advice.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/julaxel/68260290918.pdf
    • https://uploads.strikinglycdn.com/files/33aeb820-16a8-473b-8035-99da91b99ce6/como_iniciar_un_taller_de_mecanica_automotriz.pdf
    • http://giwigevo.rf.gd/22645265954.pdf
    • https://uploads.strikinglycdn.com/files/641592bc-b125-4af4-8a5e-a15f4029efba/19256492961.pdf
    • https://s3.amazonaws.com/limewub/58315240916.pdf
    • https://s3.amazonaws.com/xubifupi/33728844486.pdf
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_ef29e33c7c3e4440aed1b2f32a4db985.pdf?index=true
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_94927d23c86544edb161e503fcf707ff.pdf?index=true
    • https://s3.amazonaws.com/pozokimepe/26856456721.pdf
    • http://jitemawuvefogox.epizy.com/kaxulifawetej.pdf
    • https://56a79910-2d97-40e4-a1df-bca3b17021d7.filesusr.com/ugd/2721fc_95a410e9ad5c40cc939735fc80ff02e1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0a99a1fc-ddf6-4b7c-b278-54f93eba71c8/27756767411.pdf
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_9a66170e454e43b0866231d77e109a9f.pdf?index=true
    • 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_off0001039a.bin
a5dcdc68fe6dd35c432efe151038dd79541598b99d2ea15a4412d2189d045427
pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 5288 bytes
font_01_sfnt_off00011574.bin
e6adfd3e589576451f9a440fd4b06d622a17916b4608b15d70980f8ba360600a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11574 11072 bytes