Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e36892fe850771…

MALICIOUS

PDF

69.2 KB Created: 2021-09-11 00:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: dd922153fde3098a86cf3b619eb9fd4e SHA-1: d03a796e2682ed5f5d79c83215f6184f0abac390 SHA-256: 01e36892fe8507719efcc23e3e353a685d9a91d9458360184c121ad46004ac3a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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://iscyber.com/userfiles/files/xubavog.pdf In PDF document text
    • http://capitaldanceacademy.com/userfiles/files/12887285715.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/zidopigaruwis.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210907211625.pdfIn PDF document text
    • http://vuatoyen.com/uploads/userfiles/file/51831063103.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/veguxog.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/37195839573.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/5400332308.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210903_C54FD3F32832C35F.pdfIn PDF document text
    • https://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/redetakozos.pdfIn PDF document text
    • https://snf.styleguides.ch/userfiles/files/regukoguje.pdfIn PDF document text
    • https://feldmann.pl/userfiles/file/regozapivafumupobotewaru.pdfIn PDF document text
    • http://accronline.com/userfiles/file/29132262823.pdfIn PDF document text
    • http://zamdq.com/filespath/files/20210909070453.pdfIn PDF document text
    • https://geniodelweb.com/file/rijogexajenakoridor.pdfIn PDF document text
    • http://hyunshin.net/userfiles/file/leratarafe.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/lazal.pdfIn PDF document text
    • http://dailygameresult.com/editor/UserFiles2/files/90568014006.pdfIn PDF document text
    • https://istanajp2.com/contents/files/75235899662.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/39173531950.pdfIn PDF document text
    • https://bccphil.paramedix.biz/uploadfiles/file/48231848006.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/kezanubeterikota.pdfIn PDF document text
    • http://escritacontabilidade.net/fotos/news/file/nuboxenul.pdfIn PDF document text
    • http://capthepcongtrinh.com/uploads/news/files/24014526119.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///sopomuralabefumif.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/mefonafimivizepusiw.pdfIn PDF document text
    • http://studioarclab.eu/userfiles/files/gonozime.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=rocket+royale+aimbotPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E6 10508 bytes
SHA-256: c3db0541b11250d23b44b4fb1d8f3754d4b2b26e3135c0e8cbab6310d79fcf1c
font_02_sfnt_off0000e1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DD 14900 bytes
SHA-256: b2310622b4ec817c4523c4dbb28b2f384053fe0394b871eab8688e46319127b5

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