Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bf0f046ade4baa…

MALICIOUS

PDF

81.0 KB Created: 2021-09-24 00:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cf8145eb6621d479481f9e04b02239a9 SHA-1: 75e9784ece5a19ec7ca1f4b118b5232eaed730a7 SHA-256: d0bf0f046ade4baaa625c955a0147d49c2f199ba252bc13ee7b0f0628611e5c9
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to potentially malicious files, suggesting it acts as a lure or distribution point for further malware. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_URI' further supports its role in a link farm or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://tvmreza.tv/ckfinder/userfiles/files/volid.pdf In PDF document text
    • http://itagqatar.com/itag/file/files/jezuxenivulep.pdfIn PDF document text
    • http://maility.pl/_ADRESuserfiles/file/65101218831.pdfIn PDF document text
    • https://ddnepal.com/assets/userfiles/files/joxiv.pdfIn PDF document text
    • https://educhina.mn/editor/files/2645191544.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/meniwebazi.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/8441425384.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613facbfbbfd3---81161331208.pdfIn PDF document text
    • http://618tuan.com/uploadfile/file/14786832805.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/86586064425.pdfIn PDF document text
    • https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/6626670452.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/97824314185.pdfIn PDF document text
    • http://gabinetortodontyczny.eu/userfiles/file/poxuroderujuzilifosulo.pdfIn PDF document text
    • http://larrysiegellaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xabemake.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/6bc86c7d26274d7c21fae496b3f2ab3b/12671455067.pdfIn PDF document text
    • https://hsse.cl/files/34979586282.pdfIn PDF document text
    • https://dolupin.com/calisma2/files/uploads/42809008573.pdfIn PDF document text
    • http://xn--90aatbabxd8ae1kf.xn--p1ai/files/97349780472.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=warships+blitz+hack+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_off0000d0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DC 10400 bytes
SHA-256: 64c9d10ca70ec8e9fd2cbf6b09be353c6dfbca30d09140c8a68e60d7a44adcdd
font_02_sfnt_off00010057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10057 21264 bytes
SHA-256: 108fefd81fede182c2b5a9ab3c4fe13e5f43c48455399e5f63a94cf339aaad84

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