Malicious PDF — malware analysis report

Static analysis result for SHA-256 886d2285af87f2af…

MALICIOUS

PDF

77.4 KB Created: 2021-04-25 02:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 99d3d7a24ab01407a18d12d1673a9808 SHA-1: 9105547219d4d817cccadca8906d0c242a8b2d9d SHA-256: 886d2285af87f2af4fb2838383de1055694fe57eeb6edae931eaf9bb9069594a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware download page. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to product names, suggesting a lure to trick users into clicking the malicious link.

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://jumiwimov.ru/strik?utm_term=carrier+weathermaker+8000+fan+motor PDF link annotation
    • http://zodimevumu.22web.org/tratamiento_para_anemia_ferropenica.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/WieGeha/firefox_for_android_4._0.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/caiaf3S/fenokuremo.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/73idNTI/breaking_bad_news_guidelines_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/hhdoaPn/rawiwozoveju.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/hhgdhcb/archer_hotel_new_york_rooftop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467576/normal_60393632ec81b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415309/normal_6023dbfb011aa.pdfIn PDF document text
    • https://cdn.sqhk.co/mumaxifup/3ggggw7/xejufumomadudukinelut.pdfIn PDF document text
    • https://cdn.sqhk.co/paparidew/X6heiiY/vojidadova.pdfIn PDF document text
    • https://cdn.sqhk.co/penavagalo/gjBhcHt/spider_monkey_running_with_arms_up.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418166/normal_5fd963356fd85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibuxidon.rf.gd/read_carmilla_online.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/zebomijikevoruzir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6f54af-4f3f-436d-b2ec-3b2d2cbb49dd/free_westinghouse_sewing_machine_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903f14d2-b9bf-405b-a227-182ff9a51ec1/sonicwall_tz_205_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1293f95-d517-40aa-ae0c-12d0ad4beadd/rosuwasibazamipezejas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279e68f6-e917-4fdd-b3e9-e56171ccd1af/bosch_ask_the_dust_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/96278491321.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_off0000efc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 5196 bytes
SHA-256: 39bb5f4ffa82aa4be303d4f3f5cc24ed11a3681efa28f74ac6f20e6d73fce005
font_01_sfnt_off00010158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10158 11524 bytes
SHA-256: deafbd451717ab5ce8419d04512105068e04f0675c14ffcbd8533b573cc2f17c

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