Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee25b8ea98af8f9…

MALICIOUS

PDF

89.2 KB Created: 2021-09-20 17:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 056d6172d272b6701ce445d3b6f49958 SHA-1: afe097af307d2542dbcad6c464757c6ae34913df SHA-256: 2ee25b8ea98af8f932bfcdf09c33aa4c958a96c1078223facf5b882b1ebb14b0
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with many embedded URLs pointing to potentially compromised websites. The presence of 'utm_term=remove+chrome+notifications+spam+android' in one URL suggests a potential phishing lure related to unwanted notifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://euromarkcreations.com/new/fck_img/file/gipudinajagawomumilade.pdf In PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394b781963c---8773714521.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161351f723b01e---polorimagurod.pdfIn PDF document text
    • https://onlineadda.net/ckfinder/userfiles/files/rutisimanezilevesigezos.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/40694628896.pdfIn PDF document text
    • https://pinyardim.com/calisma2/files/uploads/25634710869.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/15449187437.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/161353b0629005---purizapaba.pdfIn PDF document text
    • http://sarljarry.com/userfiles/file/wevajawazad.pdfIn PDF document text
    • http://vagtteam.com/userfiles/Files/96652027151.pdfIn PDF document text
    • http://immobilier-valence-agen.com/userfiles/file/86596082728.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/98331c94916d6d5e67ba02ef495bc447/kofevuv.pdfIn PDF document text
    • http://sns.hu/_user/file/89738590617.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/32986475143.pdfIn PDF document text
    • https://nhuadailoan.vn/upload/userfiles/files/86762878011.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/b368567a37bf2dce17ecb72b248bb3e4/kogaxumez.pdfIn PDF document text
    • https://ev-owners.jp/userfiles/files/58421974388.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144b1195268c---45742778064.pdfIn PDF document text
    • http://csp.hu/editor_up/vorozu.pdfIn PDF document text
    • http://huucodatlanh.com/userfiles/file/zetasubatubosisanuwovezu.pdfIn PDF document text
    • http://pate4me.com/userfiles/file/gabamajapax.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/58cn1e9rerglsmfr7n3lintmf9/tolubalulane.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/85651902765.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=remove+chrome+notifications+spam+androidPDF 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_off0000f64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64C 18304 bytes
SHA-256: b9670f70db7bfacba57d775bdf23a342344d6aea8c815b6a45daa4cd4a07326e
font_01_sfnt_off00012593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12593 10952 bytes
SHA-256: 6697cdd01fb56354514453d4b121ee15dff71f40885a08a0a97fdebbbfb070d1
font_02_sfnt_off00013ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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