Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cc17d4f4a61457…

MALICIOUS

PDF

68.2 KB Created: 2020-11-23 19:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8b9137ca766628786f679b373ddf1548 SHA-1: 1e0d33c443bc8d63322dd648468a3e5447cc0036 SHA-256: f0cc17d4f4a614579b6061784dfaab25cfa4e8c5539ebd261ec5ee93f8de88ad
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely 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 malicious site, potentially leading to further compromise.

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://traffset.ru/123?utm_term=windows+media+center+tv+guide+listings PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393188/normal_5fa5fc7e96fb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e619bf5-82ee-4c75-b877-adc63e66e245/83160313293.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/fundamentals_of_computer_operating_system.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/zoretefirutawoketisimimu.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/90197511169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee248286-712f-4aa6-803d-361d25df75ac/steel_structure_by_zahid_ahmed_siddiqui.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04e92dc8-38e8-4f8a-baf9-03ccf3ace1f0/famise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/090574b6-97ce-4f5b-94da-fef6c976876d/dinamicas_de_autoestima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ee2ead-1364-4216-bd4d-666a3a8aff44/instalikes_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/industrial_wastewater_treatment_technology_patterson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b7ac70-7ee2-4716-8558-808285e9b64f/wasavenulobogujemeteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc4ed68-55bc-4c6d-9bf6-f3f3889929ed/how_to_use_sony_acid_pro_7_keygen.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/methyl_chloroform_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2aa97c-db9f-46f3-a420-f4a229a78d60/siretobaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/accelerated_reader_test_answers_key.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_off0000cf18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF18 5424 bytes
SHA-256: 61b43dd0fb349a3f022d9a81e8dcfc7f0f468f2cfff464ab82f82125d2fbb604
font_01_sfnt_off0000e18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18B 10048 bytes
SHA-256: cfff40a725e2c0287a1888bbec8b5a963835168e3ffe7d611f04a1d6420ee5b7

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