Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4d6a11da71d824…

MALICIOUS

PDF

75.8 KB Created: 2021-03-05 12:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 147fb812f0836b8b824348da5c6a06df SHA-1: 27fb1e40ef1b59659072175950443a0a415e89c7 SHA-256: cb4d6a11da71d824fc93aa79ada6f18810a4d35b7bdc56d3f82f74a606ecd3fe
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a compromised website.

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://bologen.ru/award?keyword=baby+girl+little+red+riding+hood+halloween+costumes PDF link annotation
    • http://options.expert/lojerexpe0o.pdfIn PDF document text
    • http://zahlungsservice-ch.site/contoh_surat_permohonan_pencairan_dana_jamsostektafmk.pdfIn PDF document text
    • http://varietystore.website/color_notes_app_for_pc1hp50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_603aa82e93169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476288/normal_60096929089af.pdfIn PDF document text
    • http://profer-opt.ru/zowovigosigaxasevuboewmk7.pdfIn PDF document text
    • http://1fps.ru/xulozevirenuluwugawqqpw2.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/labitajaxatufib/28280794007.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/contemplate_mentally_nine_letters.pdfIn PDF document text
    • http://sipitifijuju.epizy.com/how_to_fix_panasonic_inverter_microwave.pdfIn PDF document text
    • http://sebozum.epizy.com/southeast_asian_model_example.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/animation_drawable_android_example.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/86005321432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5362434c-f4ca-4c3a-a9da-639b70691bcd/lady_windermeres_fan_movie_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/66872907702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a363a1e-bf4b-4429-b316-ffafa764551d/18912310543.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/bittorrent_windows_7_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/pujamelonasigaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48dbd126-d2a4-40c0-968f-40676abe28a8/65784355878.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/lanebiguxikimugituraw.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_off0000eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB22 5736 bytes
SHA-256: ed510bb3515a79afb4ec35a469005005c2005a3beab72dae2b0538e87fe273f1
font_01_sfnt_off0000fe90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE90 10240 bytes
SHA-256: 1c90de5aa22b13f7a635e34cdabd34e5ebf2511916899ee61dea47b22e695606

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