Malicious PDF — malware analysis report

Static analysis result for SHA-256 639098a3bd188d6b…

MALICIOUS

PDF

80.9 KB Created: 2021-03-17 11:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 3e42f6d75074fe2373ba13abd700bd4d SHA-1: 30cc68ef3681f06dcc9852b665e61aae6eefd99b SHA-256: 639098a3bd188d6bf871c667b9114e3ad477ce897b26be6fbdb0095cf5eb819c
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to business reports, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/award?keyword=business+report+example+for+students+pdf PDF link annotation
    • https://cdn.sqhk.co/tefozakozup/y1MibX0/best_voice_recorder_app_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzikewed/6gdjbgd/71971492372.pdfIn PDF document text
    • https://cdn.sqhk.co/xelajuwodaf/hd7ZhhX/nova_launcher_prime_apk_2019_full_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/ifLRCk3/lipumaderijexadeje.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/haTcxL2/grandpa_s_world_jungle_adventures.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/ejaidQZ/robukajenoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/gh8heeV/62567553658.pdfIn PDF document text
    • https://cdn.sqhk.co/nijegonusas/RQNcgd9/landscaping_business_plan_template.pdfIn PDF document text
    • https://cdn.sqhk.co/vavuvalegel/V1Jmg6n/50392103525.pdfIn PDF document text
    • https://cdn.sqhk.co/kirorakoxu/dghugd0/92872100943.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/jcsgejj/warlord_definition_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b7adbf-fc5d-4b14-af17-27164ae25309/jokavukojosamamumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e84435c2-6da7-49ca-85d9-d23bbdeabd34/povuwivafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64b9a6ab-af83-42a3-8d8a-754e80503d26/minafog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7070f200-534a-4cd0-9658-eaaafa1d45de/rumelesutevizokasusen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c3137b-ef43-4c4f-aeb7-2268af734564/lazibojixiwavazefanalip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf42273-2aaa-4dc0-ad2e-b15e0e1c7b05/computing_essentials_2017_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4906b51e-6db0-4084-ac62-170cc81e5a67/20679216534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee8344c6-a01a-4a57-8b6e-113eb0219a39/xejeranegiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1aea5e-c681-4339-847c-a872d9d52ddf/vitamix_e320_ratings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0595040-ea4e-4f78-8098-2302a3a21199/does_brain_fog_go_away_after_menopause.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b48ef6a-e61c-4f55-b3e8-16a2d2acdfdb/41612771369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70536acc-16b0-46f9-8538-e1c664ab0084/microsoft_project_professional_2019_download_trial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31167e1a-08dc-482b-a2b2-2544a2cdb391/ms_project_download_free_2013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf34f547-229a-4308-9afe-ae1a444e34e5/38636999077.pdfIn 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_off0000ff74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF74 5304 bytes
SHA-256: 7fc03dc3cd9f93c1a56143c9654483f650ef9c4bbda2b85f66deb2af87506a10
font_01_sfnt_off00011170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11170 10740 bytes
SHA-256: 8de9a5a26228b6dc2b57d016d9812ff8d7b1c819ffb73139b293cc9940a125e0

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