Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f6505474ace280…

MALICIOUS

PDF

79.0 KB Created: 2021-04-06 22:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8555fa715a1d66564911ffcc7783494b SHA-1: 4cec4ccf89bc14f1203aafb2563201e081057f97 SHA-256: d6f6505474ace280edfa5e5dd8834539af6c6dc831bf86f45833d5a821c6d8b2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and multiple other unknown URLs were extracted. The ML classifier and ClamAV detection strongly indicate maliciousness, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jacksth.ru/wb?keyword=how%20to%20unlock%20door%20on%20maytag%20front%20loader PDF link annotation
    • http://keepxufi.space/43982711929jrxqr.pdfIn PDF document text
    • http://euroshopmn.space/3249407721824j2l.pdfIn PDF document text
    • http://veronaital.space/super_cats_grooming7xepy.pdfIn PDF document text
    • http://uscarins.info/modern_calligraphy_alphabet_practice_sheetsidl39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/farmshelf_crop_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/wofajejudiwelinuperilodof.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/wow_inscription_guide_mop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561b3637-0642-44f7-aefd-9e162e1bc435/72894295985.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/23890640137.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/sosim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bb393a-8cf8-4528-8e70-c0fc80436278/13217472776.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/gorokikevoperunode.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/personal_statement_example_for_university_application.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/brownie_guides_promise.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/afterlight_full_pack_apk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/datutog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/096b4029-351f-424e-bf92-a66a0c0a2188/rategef.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/pretty_little_liars_book_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdfa8c96-fa70-47ac-9e36-bc023d2962b0/wedakuderesazotosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b09139-4278-46d3-8e60-a8fd9b5f4bf4/does_the_cherokee_tribe_still_exist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52fea5e1-47c8-44bb-a286-6b3e0b2f594a/murobejokogeger.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/what_is_the_difference_between_plantronics_voyager_5200_and_5200_uc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbbf5dba-f49d-40f4-a275-f04632aa6318/fanazujajotogalux.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_off0000e9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 5216 bytes
SHA-256: 2c13a013d921272466b4cb81717f9b0b70d18b574a4aef2cbd195922708dab38
font_01_sfnt_off0000fb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB79 10752 bytes
SHA-256: 481ae3dee9c19bc2a32703e8b966b0ca3154001dcc0bf1b7c9d5a2fc440849eb
font_02_sfnt_off0001203b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1203B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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