Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee4beee5e8ce46d…

MALICIOUS

PDF

83.7 KB Created: 2021-09-01 21:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ab67869d0769331d494079d73e5bffd5 SHA-1: e27232103ebee2977b082e79a002627c56a9aef4 SHA-256: 2ee4beee5e8ce46d7ca920adf6fc7bfb8249732c3804b4d007a0c9b307f26513
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, likely intended to lure users to phishing sites or download further malware. The PDF's structure and numerous external links suggest it is part of a broader phishing or distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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://drafthe.ru/uplcv?utm_term=soul+coming+out PDF link annotation
    • http://cobmedia.hu/include/xulawodizo.pdfIn PDF document text
    • https://langumeistras.lt/i/File/57853240334.pdfIn PDF document text
    • https://www.highettmetal.com.au/application/third_party/ckfinder/userfiles/files/93288642963.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16120a5aa990e7---9717051600.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a127b3113b6---97374428890.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9286889098---68769559181.pdfIn PDF document text
    • http://liccuza.ro/stiri_files/file/wupebuzulelimalefekepaf.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/76387309034.pdfIn PDF document text
    • https://wotfiles.com/ckfinder/userfiles/files/piziliwunajeka.pdfIn PDF document text
    • https://majubesar.com/contents//files/59671862867.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/c8k7m1u8mf76belg66p74iabb2/6411935288.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/57300806209.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef81e16afb---lenaxopimubusamat.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/kesiluvoxesowumumesozin.pdfIn PDF document text
    • https://melz-feu.ru/upload/35217566077.pdfIn PDF document text
    • http://jrjohnsonfamilyreunion.com/clients/0/09/090f04f22b165063c0e57546eb93b169/File/bunosikomozuvabamefapes.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b519870a43---jinokidogemuxejejo.pdfIn PDF document text
    • https://eletvital.hu/uploads/files/taxoridevagogole.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/f62af09aa13550876563804bf1d43047/xoxegakupogolawema.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/firalenosezopugawunotokuz.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6f0172c02---lesugizaxagusigowulo.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/kidurolazifukadubegeba.pdfIn PDF document text
    • 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_off0000e4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE3 17948 bytes
SHA-256: c3d99b0b99634ddba0ea14f81574b8dba6883267ba0d4be825e3da2f6ccda393
font_02_sfnt_off00012b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B92 10188 bytes
SHA-256: aa02a947be33346d97ee7f3c0853f8604123b88daf71db0cea83b8b9222587d8

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