Malicious PDF — malware analysis report

Static analysis result for SHA-256 3020a365ef0cfd77…

MALICIOUS

PDF

81.1 KB Created: 2021-09-19 09:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6001b283bf08a5d4e040435061552a84 SHA-1: 1865a1838efe1f0fbad30b5ffdd89faa9dae187a SHA-256: 3020a365ef0cfd774a54a5f5b155f4381bab0bf893c3406123cfc1e542d50db4
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm designed to obscure the ultimate destination. The heuristic 'SE_DOWNLOAD_BUTTON' suggests a call-to-action lure, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://manu-transport.com/documents/file/rorenojawanipapewusazizu.pdf In PDF document text
    • http://leguido.net/files/sejuvafosowikipume.pdfIn PDF document text
    • http://www.ppk-kp3k.kkp.go.id/ver2/extra/ckfinder/core/connector/php/media/ckfinder/files/xufefagezidijujibenonule.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/vatewoni.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/6375948063.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/wafir.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/zuvavisegutut.pdfIn PDF document text
    • http://dellalontra.it/userfiles/files/muruleninetorelabi.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec92d3da5f---31979457518.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/xifivop.pdfIn PDF document text
    • https://discovery99.com/userfiles/file/gatase.pdfIn PDF document text
    • http://phuocthuan.vn/images/pic/file/3048183340.pdfIn PDF document text
    • http://hotdeals24x7.com/ci/userfiles/files/106652471.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/fivitemuzamolatojiraja.pdfIn PDF document text
    • http://northmarking.com/userfiles/files/gijutovijigegowigep.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/vudusewu.pdfIn PDF document text
    • http://baobianhkhang.com/upload/files/pafuvuja.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/xuxolaw.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/gesunaretosumewobijutut.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/pinomowen.pdfIn PDF document text
    • http://solo-reisen.com/media/images/file/81378873725.pdfIn PDF document text
    • https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/14978172046.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/rutusatigunan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=babumoshai+bandookbaaz+full+movie+download+mkvPDF 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_off0000d588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD588 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9A 18216 bytes
SHA-256: c2846bf70c48d43e64ccffe56b7fa0b2697dc81b64fcd35c5cf8b78df9c28723
font_02_sfnt_off00011cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFE 11020 bytes
SHA-256: df068c95c38753560a5a01c32d5707d050a83e4bca7771510b24efef65d26711

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