Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad321660505531a…

MALICIOUS

PDF

83.8 KB Created: 2021-05-21 20:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 6c2ca67487abfcaa862aa13c017abda7 SHA-1: eb9a8452277fad3f499a083231a2502fc16d8c1b SHA-256: 0ad321660505531a9eabd8ae3870ac6bdca76e1968aee91af7048ddc0ff39b60
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a technical lure related to electronics. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=como+identificar+el+positivo+y+negativo+de+un+capacitor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498834/normal_603e26892cf9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_604cc3db28c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_5fd99206adc28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409095/normal_600929903d134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493245/normal_603b35072f63f.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/davubewu/aggression_questionnaire_short_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58d6f186-8a71-44d8-b3fb-96e26ddf3afe/seasons_and_months_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/singing_for_the_stars_review.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/dancing_line_the_piano_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/enzyme_activity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/rail_reservation_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/diabetes_guidelines_2019_algorithm.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/solomi.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/high_flow_air_intake_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/kadumuwijawademinorubati.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/lozubejagokebabijabetaja.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/pedamovanenonodulolaxuje.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/98707377272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49db8290-c8bf-42e0-8c7a-d2df7272ed38/duzoza.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/86122523604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/607ae679-c21b-4d64-ba30-ccc89e0cc35e/64118955447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a826958d-bc21-4701-9c69-75e7cefca8de/sherlock_holmes_2_movie_download_in_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/nurapet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4396cf0a-2e67-44cf-91bc-aed64868e415/39875152967.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_off000103b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B9 5540 bytes
SHA-256: 6409ea4b047bcc452fc36acda843c6fcc07b793bdcb3d344a633034efa3b3c07
font_01_sfnt_off00011687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11687 12444 bytes
SHA-256: e027ebf925b125134baebd277dcbdf223c152e302e22911c7697e7f61b369baf

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