Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df4399ed641a671…

MALICIOUS

PDF

69.5 KB Created: 2021-03-20 07:47:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03d27b10ab54a9c4f34e6b2f18322e1c SHA-1: 69117ae912bafd917deba866006f3a484be733c4 SHA-256: 5df4399ed641a671c76cf960e5b17b45addea5095131b654b547fc260b0955f3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to phish credentials or deliver further malware. The document body, though heavily obfuscated, suggests a legal context, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=bittencourt+penal+especial+pdf PDF link annotation
    • http://firutejewotoko.22web.org/sc_caste_list_in_haryana.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/jgjaQXt/royal_family_dance_crew_nederland_2020.pdfIn PDF document text
    • http://dujopaximejuger.iblogger.org/xatidelibuginomukisofoxag.pdfIn PDF document text
    • http://zebekuji.22web.org/android_version_9_always_on_display.pdfIn PDF document text
    • http://bebodepana.22web.org/tumawumonujedoreto.pdfIn PDF document text
    • https://cdn.sqhk.co/kowetitemaro/f5wwGhh/xizozel.pdfIn PDF document text
    • http://resimpub.com/learning_to_die_in_the_anthropoceneiigkg.pdfIn PDF document text
    • http://shtampshop.ru/sapefakodamaropitey1k.pdfIn PDF document text
    • http://tikovg.xyz/40736079080ta5kn.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/rawesaragegugar/36315521187.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/paradise_coldplay_violin_sheet_music.pdfIn PDF document text
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_f409a714bfb8454cb5b94c608168ad23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/mixip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ff8556-9ec8-4c66-94aa-6f8e18bf9347/zudofapeburokar.pdfIn PDF document text
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_831be14d37f54c34988c45e0c5bf59b2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/777cb28e-4edf-4ad3-9961-66d63b1ec129/when_a_guy_crosses_his_arms_what_does_that_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/tutapebogijugisitigavil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f789c7-9cd2-41fd-9920-fe3fc13c1418/zebco_33_classic_parts_diagram.pdfIn PDF document text
    • https://5a8aee2d-3d68-4c09-98ed-743c9c56d6fd.filesusr.com/ugd/460efe_8611016f21b943b08068b8023cc8f6a8.pdf?index=trueIn PDF document text
    • http://zujapataluzipo.epizy.com/englisch_aufgaben_klasse_7.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_off0000cf84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF84 5200 bytes
SHA-256: d34a99c548cdd73f076e50555428844bcd957ce5b26562364d8abc0ea94ed244
font_01_sfnt_off0000e144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE144 13176 bytes
SHA-256: a0b5f4f87cb4c7a38d97545f1365f32658d72e095000ad7face161907cfad594

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