Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78e0fc6eb8a785a…

MALICIOUS

PDF

70.3 KB Created: 2021-09-03 19:35:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 84fbe2d4f9ac4c9bbce8e9a4efa5f664 SHA-1: 49e613b26866fd128377087ec4b65debb8209795 SHA-256: d78e0fc6eb8a785aec75c204f746f61a3fed72f81275137ccf35d58ba9802e16
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document is identified as a phishing lure, likely intended to deceive users into clicking on embedded links. The document's structure and numerous external links suggest it is part of a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF's nature and the presence of external URLs indicate a potential for JavaScript execution or user redirection to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://donaldbermanmaimonidesgolf2020.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/54592523625.pdf In PDF document text
    • https://polaria.cz/images/file/jonunekatamiwusi.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/c8cd339176422fe6435ed73da9f67ccf/21678553930.pdfIn PDF document text
    • http://goldsunjsc.com/upload/files/52962051595.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160758ee40b1cf---gojumumitobome.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/lobazatasufumuwameke.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160775c0aa0dfa---94682254311.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca1717b690---likazitu.pdfIn PDF document text
    • http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/71132154254.pdfIn PDF document text
    • https://fertilizergranulatorprice.com/d/files/norujav.pdfIn PDF document text
    • http://energo-market.ru/sadm_files/menupuruvonene.pdfIn PDF document text
    • http://highspiritsmusic.com/ckfinder/userfiles/files/xikedugavojoguruvupufob.pdfIn PDF document text
    • http://turksebruiloften.nl/userfiles/file/90283339596.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/1237789450.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/36501050075.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a4babdcf9b2---20888355115.pdfIn PDF document text
    • https://thegioibaobicarton.com/Images_upload/files/fiwevalojivujabulekilu.pdfIn PDF document text
    • http://askort.pl/Upload/file/88365841383.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/tonefotut.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/78576858411.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/23869201802.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/52773580798.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/72871485305.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/pij9526ncdkoque2bdgas714i4/58496854673.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16072cd9017c17---fakawowipuduso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=yardsticks+for+costing+2019+pdfPDF 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_off0000b6d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D1 11156 bytes
SHA-256: 61948b28ef2f4b9f4974b9ab122b767011290f91065aa8e6d176f5a6a3374076
font_01_sfnt_off0000d0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E1 13932 bytes
SHA-256: 02b719f55dbc5975e18dbefb7fea1b2313b58374bd806ae924cc41a34f90d052
font_02_sfnt_off0000f34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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