Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfafaef610fc331b…

MALICIOUS

PDF

68.0 KB Created: 2021-04-06 23:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 785c3eb3ae083cdba2cf8cf2b142666b SHA-1: c5272298b95f7aa8e7391a501a9af76518912470 SHA-256: dfafaef610fc331b759982b1acdc040fcc31984a9990ecb188f5f8ace337f5d5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://xigowobil.weebly.com/uploads/1/3/4/6/134645495/6b7bb5b6.pdf.
  • 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://crophysi.ru/award?keyword=candle+berry+books+pdf PDF link annotation
    • http://radafogibivos.iblogger.org/el_arte_de_la_prudencia_baltazar_gracian.pdfIn PDF document text
    • https://xigowobil.weebly.com/uploads/1/3/4/6/134645495/6b7bb5b6.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/how_to_use_sony_dsc-h300_camera.pdfIn PDF document text
    • http://lurubalopare.sportsontheweb.net/73440007438.pdfIn PDF document text
    • https://simisodiguguvig.weebly.com/uploads/1/3/5/3/135324772/7835945.pdfIn PDF document text
    • https://sipadaguw.weebly.com/uploads/1/3/4/3/134322090/repitimugipus.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/1490987.pdfIn PDF document text
    • http://sakivometo.medianewsonline.com/addition_of_fractions.pdfIn PDF document text
    • http://kufejat.sportsontheweb.net/14213685512.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/fukepez/63935940817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2abbca69-e3cc-4265-b11d-e19b6df39163/jozunupaf.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/descargar_plague_inc_apk_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02d82a27-2e5e-4640-90f3-e52018bce4ad/vugikixibovude.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/balanza_de_pagos_peru.pdfIn PDF document text
    • http://fopugunela.epizy.com/zaminudowux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4007b9-d72d-416b-8e33-56e8e409a70e/what_does_it_mean_if_someone_is_hollow-eyed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff452426-48e1-44a9-8859-b9950418f7a0/lawn_boy_10684_oil_change.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/85138334783.pdfIn PDF document text
    • http://xonifovozub.epizy.com/krik_krak_haitian_jokes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f221979-5315-452f-8140-6e5191e612c2/jimorakolil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a598f0-785f-4ce2-a2eb-25a7f6e2de30/would_you_rather_questions_hard_decisions.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/platform_bed_frame_king_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/83014236784.pdfIn PDF document text
    • http://labutebumir.rf.gd/cetusplay_4._1._8._1_pro_apk.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_off0000cbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF9 5244 bytes
SHA-256: c5ed76822ee1f6c45e59ff119a56b3c253ff0ab82ee107e80c3623a4ac1cf43d
font_01_sfnt_off0000dddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 10964 bytes
SHA-256: 060f2534f3de43de6a00bd3cd583b019ee6586e1ed19235c961c5f65f9196fbc

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