Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9511efdbfe6514…

MALICIOUS

PDF

78.3 KB Created: 2021-03-24 20:41:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cb68f530dfdc1055505d74948047b060 SHA-1: a1a29913c5ef16f43a2fcf01a92ff0078d0cc18b SHA-256: 4e9511efdbfe65145709661c7fed3dc209d4a0f6db2cd7182e59b53c81d6427b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to 'Hermes scarf tie'.

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://dugedepap.ru/award?keyword=hermes+scarf+tie+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457620/normal_60298cfda8192.pdfIn PDF document text
    • https://cdn.sqhk.co/duwefetufe/7ljcgj1/jibekuxidew.pdfIn PDF document text
    • http://wagajij.22web.org/vokozonekofewibesipejube.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/jTIB9hh/mexavolowetaxu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_600013474379a.pdfIn PDF document text
    • https://cdn.sqhk.co/tireronerogo/6hJ5ii0/vega_conflict_ship_build_calculator.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/53e603b7-075b-4067-83b1-1ce6f176ee03/worutawopufagixufogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375ab817-4930-43f7-8320-b2017ad2452a/examples_of_basic_journal_entries_in_accounting.pdfIn PDF document text
    • http://bividit.rf.gd/89666568690.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/acer_aspire_one_d255e_driver.pdfIn PDF document text
    • http://larazegabolulaf.epizy.com/one_piece_bounty_rush_reroll_guide.pdfIn PDF document text
    • http://mujujilunel.epizy.com/fegoxewefijuvipumezazani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179c5864-d49f-4b4e-a789-a0749d98bfd0/mackie_1604_vlz_pro_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/instagram_insights_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/manjunatha_songs_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/immunization_registry_information_system_iowa.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/are_light_pink_diamonds_valuable.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 5232 bytes
SHA-256: 681bf24945435d75333bde659962746af83b0de8da0835686c8d7e0d4d737d63
font_01_sfnt_off0000feed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEED 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0001077b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077B 10792 bytes
SHA-256: b0dfbd7772f8152a51cc5d8050334a214c2064e2cae1c4541b05f43a963a74fc

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