Malicious PDF — malware analysis report

Static analysis result for SHA-256 75867ad49f81363c…

MALICIOUS

PDF

72.9 KB Created: 2021-02-28 09:07:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a0fd1e9c958ad0ab80a87c45ec95ae7b SHA-1: 2b395e6cfe6be0d43d99bf7f860698b33014ff47 SHA-256: 75867ad49f81363c90418a4713b754d4dea19712395cd35a7f93086dcd8e5a5e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised as a product review, is a common lure for phishing attacks or to download further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a potentially harmful external resource.

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://zajinet.ru/strik?utm_term=ingenuity+inlighten+2-in-1+cradling+swing+review PDF link annotation
    • http://xogunajeraxuda.mywebcommunity.org/xefisotukozonevikiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453553/normal_5fd098c403694.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/aircraft_maintenance_course_near_me.pdfIn PDF document text
    • https://zodijezuworid.weebly.com/uploads/1/3/1/4/131483265/niluperasumegu.pdfIn PDF document text
    • http://wisitens.online/macromolecules_building_blocks_of_life_worksheet_answer_keyimz5w.pdfIn PDF document text
    • https://nolulanulupu.weebly.com/uploads/1/3/1/3/131379612/3193497.pdfIn PDF document text
    • http://dajexori.mypressonline.com/why_does_my_panasonic_phone_say_check_tel_line.pdfIn PDF document text
    • https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/763976.pdfIn PDF document text
    • https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/4a51ad04.pdfIn PDF document text
    • http://study-english-04.space/jirosasubaponuxejezk507.pdfIn PDF document text
    • http://medyahanem.com/anti_stress_coloring_book_free5991k.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/metal_gear_solid_v_the_phantom_pain_ps3_mod.pdfIn PDF document text
    • https://gifivetusox.weebly.com/uploads/1/3/4/7/134736849/01b9aa5c2.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/insinkerator_evolution_excel_warranty.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/wiwuxot/xilokugobutozovu.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/branch_manager_request_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/what_is_the_duties_and_responsibilities_of_an_office_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/oscar_award_ppt_template.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_off0000dbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDD 5608 bytes
SHA-256: 0e6b9c7d5003858a1d28559db82ad3e0b2a69fd93458fdce912fc6b72fd1f28b
font_01_sfnt_off0000ef0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0E 11024 bytes
SHA-256: 638607b4de5fef915634bb866cc694bd926a2398509f391cc5d723f3aeb1c8c9

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