Malicious PDF — malware analysis report

Static analysis result for SHA-256 90748c29892fb971…

MALICIOUS

PDF

90.4 KB Created: 2021-03-19 02:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e3783cc328eed0c1182f70e1b5a4d4b SHA-1: 750c044e7e76bc5af7a3e5cc20951563450b0b20 SHA-256: 90748c29892fb971d4cfce8652ac3e51448edce74144d5c173b9266a595e6b42
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The PDF contains an embedded URI pointing to 'bologen.ru', which is likely a malicious domain used for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a harmful site, aligning with spearphishing tactics.

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://bologen.ru/wix?keyword=ap+calculus+related+rates+worksheet+pdf
    • https://zejuwotozago.weebly.com/uploads/1/3/4/6/134647352/3888444.pdf
    • http://kepuwadori.22web.org/az_300_dumps.pdf
    • https://cdn.sqhk.co/mafowixodi/Xibijdv/hill_climb_racing_2_wiki_deutsch.pdf
    • https://cdn.sqhk.co/nepajenine/diahhia/tv_series_quiz_and_answers.pdf
    • https://cdn.sqhk.co/julukiporo/D3Vbuhg/rosterbuster_flight_and_cabin_crew_roster_appointments.pdf
    • https://gaxowaxogofesix.weebly.com/uploads/1/3/4/7/134719425/5730874.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/574106dc-9fbf-4ff4-85a4-9794a78fa92c/total_quality_management_definition_and_examples.pdf
    • http://wetowotupime.rf.gd/professional_ethics_and_human_values_book_free_download.pdf
    • https://uploads.strikinglycdn.com/files/cea970fb-4d3c-401b-b9ce-77c1822de547/can_you_get_roblox_vr_on_ps4.pdf
    • https://uploads.strikinglycdn.com/files/85a7ee72-df58-4778-8a8c-783507e71a66/59321350388.pdf
    • http://lijizuzinarit.epizy.com/barcode_maker_app_for_android.pdf
    • https://s3.amazonaws.com/mubemutolewe/90139069718.pdf
    • https://uploads.strikinglycdn.com/files/74244d35-cb2f-47f1-8eff-50c103fd36e6/53192562432.pdf
    • http://vamudeb.epizy.com/adrenergic_receptor.pdf
    • http://zorogeloma.epizy.com/vewetijawenuzakurag.pdf
    • https://s3.amazonaws.com/kavugusepe/gogidorumekixejuxobe.pdf
    • http://sizilave.epizy.com/kitchenaid_downdraft_electric_slide_in_range_reviews.pdf
    • https://s3.amazonaws.com/rupatojuko/bangla_movie_villain_full.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001082b.bin
f287f211af3c8a735cea83ae89a99ccfce47defbbccde49886b5ea224e2f3f65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1082B 5116 bytes
font_01_sfnt_off000119a8.bin
58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119A8 6068 bytes
font_02_sfnt_off00012959.bin
5d0beeeb5c4b28b50c10727ecebca8914e85fad2b2ee00eece6a8d5aa24ee365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12959 10588 bytes
font_03_sfnt_off00014d82.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D82 4324 bytes

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