Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf583f0ce5bd49ef…

MALICIOUS

PDF

73.5 KB Created: 2021-03-15 01:52:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 779193ba509671c5352609031f66133a SHA-1: baaafd3ee3a3c1e2189a4fff26fde306b11ac35f SHA-256: cf583f0ce5bd49ef7d629be0375d5e45e3774dbabb55784f45de296fc49999e1
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 suspicious domain, likely intended to host phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though truncated and obfuscated, appears to be a lure related to a common search query, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=what+is+the+resolution+of+the+story+the+monkey%2527s+paw
    • http://shoop-fr.ru/863986081526qurl.pdf
    • http://opensalle.xyz/dokinujixigalibetijath1npi.pdf
    • http://dodidudofa.22web.org/2021_toyota_camry_trd_v6_review.pdf
    • http://trackcreditscore.info/wexonoyvxid.pdf
    • http://potenciy.xyz/46155037649uj2dj.pdf
    • http://tiwelonepozafuw.iblogger.org/how_to_curl_long_hair_using_a_flat_iron.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc813e26-9262-478b-9490-7afeb5c0a916/63720073388.pdf
    • https://uploads.strikinglycdn.com/files/9439898a-ea3a-4633-9c5a-169ac0fe2cc4/giparegekirivowofesupakot.pdf
    • https://s3.amazonaws.com/daselex/tatalaksana_angina_pectoris.pdf
    • http://numelini.epizy.com/como_se_realiza_un_manual_de_procedimientos.pdf
    • http://bugelinuxobeva.epizy.com/philips_respironics_bipap_avaps_manual.pdf
    • http://fepesori.rf.gd/95542099884.pdf
    • https://s3.amazonaws.com/dewutexorob/69066418856.pdf
    • https://uploads.strikinglycdn.com/files/13c21da4-b13a-4a62-a606-20dc269003de/bopeku.pdf
    • http://koxowideza.epizy.com/whatsapp_status_video_assamese_sad.pdf
    • https://s3.amazonaws.com/xozeb/casting_crowns_oh_my_soul.pdf
    • https://s3.amazonaws.com/fedojigudaj/32664477588.pdf
    • https://s3.amazonaws.com/sesafefanulokam/arma_3_2019.pdf
    • https://uploads.strikinglycdn.com/files/e0b4c9c7-cbc2-4113-876f-f989817d6afa/2012_mini_cooper_s_oil_reset.pdf
    • http://labopum.rf.gd/greatest_common_factor_worksheet_with_answer_key.pdf
    • https://s3.amazonaws.com/mukutud/best_ppt_presentation_templates.pdf
    • https://uploads.strikinglycdn.com/files/35d7a5a8-d816-409d-8f82-f8d4b29890c5/fuzefewojonuzu.pdf
    • https://s3.amazonaws.com/sogovekevi/wigafawe.pdf
    • https://s3.amazonaws.com/rokuwapesu/doctor_directory_html_template_nulled.pdf
    • https://s3.amazonaws.com/purawuma/carrom_board_free_for_pc.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_off0000e245.bin
0a23b5080d1b9d1c17a3be05e1f31620033ebf095b0251fe8119e0aa2f52ed60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE245 5448 bytes
font_01_sfnt_off0000f4c7.bin
06ea23b11f77a6477bf3f3fc791d5aa6b17e34de2e2662235f3272d947289fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C7 10492 bytes

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