Malicious PDF — malware analysis report

Static analysis result for SHA-256 5233a89ae9d48080…

MALICIOUS

PDF

98.7 KB Created: 2021-03-24 18:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 21de6fcaec9ccf6349b63aa8b3fc29bb SHA-1: 21efb2cda912796e75adcb8892f3bd16743a2020 SHA-256: 5233a89ae9d48080d18788e070085311376e74f8b1d241b7935cc3eade2cefb2
96 Risk Score

Malware Insights

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

This PDF document contains multiple embedded URLs, one of which is flagged as malicious and likely serves as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, suggests a pretext of providing a 'repair manual' to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=magic+chef+wine+cooler+repair+manual PDF link annotation
    • http://vixitatevejiwo.getenjoyment.net/draw_the_shear_and_bending-moment_diagrams_for_the_beam_and_loading_shown_and_determine_the_maximum.pdfIn PDF document text
    • http://vermono.site/adobe_photoshop_camera_raw_presets462b8.pdfIn PDF document text
    • http://grizhoff.ru/14087509469075v4.pdfIn PDF document text
    • http://arfeshome.com/26680381757an0a0.pdfIn PDF document text
    • http://lovelyhouse.online/ti-84_plus_online_calculator_no_downloadu5da2.pdfIn PDF document text
    • http://sportita.fun/jenazukupajipejijetezutb2wid.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/canon_lbp6000_lbp6018_driver_windows_7_64_bit9ps7p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_602ba669c38a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5feedfbd58a6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_602e9c33a207d.pdfIn PDF document text
    • http://kivolugog.mypressonline.com/vewaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_603186f4ee707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_5fe8a73842b5e.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/kefiperizonofu/repupuvizawajamoleso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8194d0-79ad-4a30-8010-24fc621efe1f/boss_dd_500_looper.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/redmi_note_4_release_date_in_india.pdfIn PDF document text
    • http://zalatikewal.atwebpages.com/jananasuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9422f62f-5e35-4cbc-8365-32a445eecf6a/lg_washing_machine_repair_hotline.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/adaptive_control_processes.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/49371854568.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/aladdin_movie_songs_2019.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_off00013c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C5E 5348 bytes
SHA-256: 6d23ceab1ccda02b6d4130f5eff2661306154f873ded257fa097ebb4fd674352
font_01_sfnt_off00014e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E8E 13960 bytes
SHA-256: c734ff3635c06e17340cbe905ac1d352627cc7ce69532b567abeef09bfc4db2b

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