Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa24a241f1587147…

MALICIOUS

PDF

77.1 KB Created: 2021-09-23 18:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0014922e7ddbef72e19a1bdab899ee9c SHA-1: 5676163a5584f118b7a48bfd562d5376649d40ed SHA-256: fa24a241f1587147ba449ad6fa95fb49427f10053c488182ffdb66ae32c71033
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://kirilmazbardak.com/userfiles/file/pogaxodakedagetojigexoka.pdf In PDF document text
    • http://unleadedcoffee.cz/soubory/33750542531.pdfIn PDF document text
    • http://ukrfirework.com/images/file/20272270140.pdfIn PDF document text
    • http://refpecsbelvaros.hu/kepek/files/razakibelabagazomegus.pdfIn PDF document text
    • http://www.polni.si/Images/files/judalonixorulujufu.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/63277965684.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/zojiselekolegawawe.pdfIn PDF document text
    • http://qataminational.com/uploaded_files/userfiles/files/28112401667.pdfIn PDF document text
    • http://mtkshop.com/images/uploads/file/mosabawuzavafe.pdfIn PDF document text
    • http://nujhimachal.in/img/uploads/files/42681851978.pdfIn PDF document text
    • http://zamdq.com/filespath/files/20210912125659.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/gaxobe.pdfIn PDF document text
    • https://pollackmihalyiskola.hu/ckfinder/userfiles/files/dexufujemiropinolawilokuz.pdfIn PDF document text
    • http://makrostal.pl/user_images/file/tarajemulasexakevakufa.pdfIn PDF document text
    • https://mayphoviet.com/media/ftp/file/zagazududujotik.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/98632997267.pdfIn PDF document text
    • http://braciszewska-klimek.pl/fck_files/file/wibegajolopewadego.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210905135815.pdfIn PDF document text
    • https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/ruwitota.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/50657871176.pdfIn PDF document text
    • http://www.dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/luledebedik.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/ritifunawadozenewanunazu.pdfIn PDF document text
    • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/82922627825.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=street+fighter+4+champion+edition+mod+apkPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE191 11096 bytes
SHA-256: 944c1d03b9b7f3fa5ba757be1705a614ab5b04e66eea567b7bfc8bf2cef0cb6d
font_02_sfnt_off0000fb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1C 16916 bytes
SHA-256: 09632180385da9143b5ba6c8fa22de7933f0cb39dd4698edb3ffe6514a17633d

Open this report in the interactive analyzer, or submit your own file for analysis.