Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d5fc0b6757194f…

MALICIOUS

PDF

97.3 KB Created: 2021-09-10 13:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f08874176c8cf9a8ae61bc2e90e3ff77 SHA-1: 33a17896ca3a3e4c9ef2187736415ca09fbb5105 SHA-256: 60d5fc0b6757194fdb40b2a067c723acf66667513d5af098c6508047ca5f121d
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, indicating a phishing or malicious content distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the execution of malicious code or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/90524376080.pdf In PDF document text
    • https://mobisteelegypt.net/userfiles/file/98447886816.pdfIn PDF document text
    • http://t-eamplus.de/web/editor/files/36165196888.pdfIn PDF document text
    • http://clinicaveterinariagoitese.it/userfiles/files/85863502890.pdfIn PDF document text
    • http://zaintik.org/files/galeria/files/gedosigekosufusi.pdfIn PDF document text
    • http://w3-japan.com/js/upload/files/38495990285.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/82a61f0806beb3ed9d3c570f8e004cd5/pogozevomiluvusufa.pdfIn PDF document text
    • https://jmcoverseaspvtltd.com/uploads/files/josonotiw.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/pijadej.pdfIn PDF document text
    • http://domgr11.ru/uploads/files/vuviveralefixegobitiduxub.pdfIn PDF document text
    • http://aesg2edcv.handylover.com/upload/files/44303771605.pdfIn PDF document text
    • https://maritime-models.com/userfiles/file/24835673347.pdfIn PDF document text
    • https://ethnicminorities.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/14914383893.pdfIn PDF document text
    • https://coopinproject.eu/ckfinder/userfiles/files/43938266268.pdfIn PDF document text
    • http://bienbao.org/uploads/files/60059921090.pdfIn PDF document text
    • http://pyhunlian.com/uploadfile/file/juxoguzafukinoxinum.pdfIn PDF document text
    • http://toeicspeaking.net/_UploadFile/Images/file/losesusirujufagipopew.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/39040907569.pdfIn PDF document text
    • http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/30077190705.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/dulovafizinut.pdfIn PDF document text
    • http://aytekinpolatel.com/image/files/61571775179.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/47397303574.pdfIn PDF document text
    • http://z-him.ru/userfiles/file/fozukujepu.pdfIn PDF document text
    • https://sharjahcements.com/images/bulk_images/files/67530106016.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=shin+budokai+2+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_off000116eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EB 18868 bytes
SHA-256: 3a1a9cc00b3c139352b84c38446f59e45c85b17a2fcdcfc313467f652ca439e0
font_01_sfnt_off00014816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14816 10472 bytes
SHA-256: c0f78ea28d02a8d6933de08882ea3c337bc3fe33b1229ed5f29ab4faf02fb1f4
font_02_sfnt_off00015f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1