Malicious PDF — malware analysis report

Static analysis result for SHA-256 507e6a5f754abd57…

MALICIOUS

PDF

74.1 KB Created: 2021-03-15 13:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7e7fb1359500bd1646e41bb9147f1366 SHA-1: 15d2400ebfdecf5597ae628112cefe4803ad3d5a SHA-256: 507e6a5f754abd57ef50f7219bb8a89460a248f7fb9927651111eda231b2952b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/123?utm_term=cambridge+dictionary++pdf PDF link annotation
    • http://3203epworthcres.com/okta_login_csulbuvxis.pdfIn PDF document text
    • http://wifisef.medianewsonline.com/basic_c_language_questions_and_answers.pdfIn PDF document text
    • http://goldstein.berlin/kuliretumiwubivitamakapamxr3xz.pdfIn PDF document text
    • http://usacreditscore.info/adam_clarke_commentary_on_the_whole_biblevauso.pdfIn PDF document text
    • http://letnesil.xyz/defender_bug_zapperunseg.pdfIn PDF document text
    • http://niwadeg.mywebcommunity.org/28390634172.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/4gj6Jid/lekazazelipilefaj.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/hbCu0Hn/67897893514.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/diTTiaM/31223938551.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/jzHhiWN/mepanatamureram.pdfIn PDF document text
    • https://cdn.sqhk.co/padezeda/bWSjhEp/zitatuwised.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/heieqbG/tap_counter_app_ipad.pdfIn PDF document text
    • http://mavaxur.mywebcommunity.org/benjamin_franklin_the_autobiography_and_other_writings.pdfIn PDF document text
    • https://cdn.sqhk.co/solalokazili/jh0K3gg/pixel_launcher_xda_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/tamil_baby_rhymes_hd_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/vascular_dementia_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/16898537276.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/the_maze_runner_series_all_books.pdfIn PDF document text
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_747d510c6dcb426699735140cf284756.pdf?index=trueIn PDF document text
    • https://d7e981a8-8c4a-445e-aef0-60d3d4911bd2.filesusr.com/ugd/65d69c_f62249637f9b4121a8fb2e7788b3aeb4.pdf?index=trueIn PDF document text
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_fa6feec0066a47f9861d79f7b98d35f3.pdf?index=trueIn PDF document text
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_7699ac7144994870b1dba8224da23710.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 5412 bytes
SHA-256: 5fcd055968d04d242c6e3c3a5ded4eeb0c7c663307e164748470ddd14efb0a15
font_01_sfnt_off0000f89c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89C 10132 bytes
SHA-256: 87c9b09416a1589193aca61d903fe28e8361017685110edfe0d748dd75c6f316

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