Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70c29fdd90704a2…

MALICIOUS

PDF

77.1 KB Created: 2021-02-02 07:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 87da7695c0dce63aaa8445be92b194eb SHA-1: e0b0503e1aa247ad05db59526bc9e61877e493ed SHA-256: a70c29fdd90704a2f439feabd96175c7875b3a825d10dd4e68f43d4be579ff55
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, identified by both heuristics and ClamAV as malicious. The ML classifier also strongly flagged this PDF as malicious. The presence of multiple unknown URLs suggests a phishing or malware distribution attempt, likely using the document's content as a lure.

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://maypoin.ru/aws?utm_term=addition+and+subtraction+of+fraction+worksheet+doc PDF link annotation
    • https://puxodemidumez.weebly.com/uploads/1/3/5/3/135345879/9091147.pdfIn PDF document text
    • http://everydayy.fun/6466241772vf3lk.pdfIn PDF document text
    • http://kinokaiff.space/adda247_current_affairs_in_hindi_downloadobnwv.pdfIn PDF document text
    • https://xesofizagib.weebly.com/uploads/1/3/4/4/134491847/zudixujijadujijufo.pdfIn PDF document text
    • http://biggymstoe.com/idle_mafia_tycoon_manager_modggosu.pdfIn PDF document text
    • http://7lessons.website/road_trip_planner_victoria_australiacvdj4.pdfIn PDF document text
    • http://sq11mini.com/201467843133mso8.pdfIn PDF document text
    • https://varozifan.weebly.com/uploads/1/3/0/7/130740200/dijijafedum.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/bugoxatisaluj.pdfIn PDF document text
    • http://masuxokovofa.66ghz.com/cheapest_carfax_report.pdfIn PDF document text
    • https://vufuredupe.weebly.com/uploads/1/3/0/7/130776381/gelokos.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/xubatuxasej-nojanokakevupa-zores-gupazalel.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/pajeriramal/vaccine_adverse_event_reporting_system_of_1988.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/mipimedakulanokalikapem.pdfIn PDF document text
    • http://kavotipuwevir.epizy.com/labels_in_word_2007_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/bayonetta_super_smash_bros_ultimate_guide.pdfIn PDF document text
    • http://besipopi.epizy.com/colours_tv_live_show_app.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/59807379340.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/47618092795.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_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 5244 bytes
SHA-256: 4add605f9bcaae6f135af8d0723a46a45303a2566376c022796be0483c8ffb10
font_01_sfnt_off0000f201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF201 10800 bytes
SHA-256: 133ec26103d0c842a164f69f1a2670110c65b7a489cf3355dce85101e784eeae
font_02_sfnt_off000116e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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