Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5d495e8eb8bfa7…

MALICIOUS

PDF

111.9 KB Created: 2021-07-30 20:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b1e53a89680ee0f502f32d5add9ea572 SHA-1: f6258425731696cad52ed90e050dea245b0243ad SHA-256: ee5d495e8eb8bfa747fed453dbb30480545f151f4559cf7c4a7472c1cff866b2
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a lure to execute commands via the clipboard, instructing the user to paste content into a shell, which is a common technique for downloading and executing secondary payloads. The document also hosts numerous links on compromised CMS sites, suggesting a phishing or spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609177c2a8b22---42713088359.pdf In PDF document text
    • http://omonetach.pl/foto/ilustracje/file/55102391599.pdfIn PDF document text
    • http://accronline.com/userfiles/file/lujewiragilidoz.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/ab734896495acea65e5904951590d394/begewukowogokesod.pdfIn PDF document text
    • http://vinhthuan.vn/upload/files/xagaroj.pdfIn PDF document text
    • http://beloit1962.com/clients/8/83/8368a4f838dea3176655029ae9e337da/File/27250552271.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/44154053602.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/dd984b45a4c9d677be26976ec3c88b33/21704618287.pdfIn PDF document text
    • http://jpbullies.com/clients/2/2c/2c827f09d77a589c2c5c7da8c033a3f4/File/35067633311.pdfIn PDF document text
    • https://egf.tw/test2/images/file/63771207642.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/da6f1a4c833bfe0167bf6d159e51f412/pitimerigamebitizalizos.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/qigvv5i188pvq8itcfdousvgd2/70457981902.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2e3aaeac3---putobemuzotonezif.pdfIn PDF document text
    • https://angkalaris.com/contents//files/mabakanuxozu.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a8a89cc08ef---94865082557.pdfIn PDF document text
    • https://media-get.com/userfiles/files/38385297603.pdfIn PDF document text
    • http://drivescuolaguida.it/userfiles/files/54753975058.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/78582791137.pdfIn PDF document text
    • http://delshadian.com/public/userfiles/file/zenik.pdfIn PDF document text
    • https://royal-art.pl/uploads/userfiles/files/90246933951.pdfIn PDF document text
    • https://go2germany.ru/files/file/wibigizerakibimamo.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/hs19ctvc6hn94v8sg9rjhvtaa0/4973467078.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/40894110541.pdfIn PDF document text
    • http://ck-tct.ru/userfiles/file/14064846853.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/rokopukixulinodapofuxuda.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/pisogu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=ms+dos+commands+pdf+in+hindi+downloadPDF 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_off00014e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E42 18228 bytes
SHA-256: f0c074111d74a18d42ffa358c4f93e6c0820b02ac739f1d1a7ef12784339aa7c
font_01_sfnt_off00017ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ECC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000196e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x196E3 10636 bytes
SHA-256: 3d4446fc36d4d2c5ef10d23094367a519df4127518e9f3fb8e59aaea610055f4

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