Malicious PDF — malware analysis report

Static analysis result for SHA-256 02959cc430e15cb3…

MALICIOUS

PDF

84.8 KB Created: 2021-09-16 01:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d65a8803180919c772d48797eb3978ed SHA-1: 325e6b8a3756b1a0c8b2c449e8394edde5421fae SHA-256: 02959cc430e15cb3d5eb84b19325b7a2c2e3dffe85faa37064d4f7a685613d8e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan. It contains embedded JavaScript and numerous external links, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection or download of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nomylo.ru/uplcv?utm_term=paradise+lost+book+9+summary+pdf PDF link annotation
    • https://igruppe.no/ckfinder/userfiles/files/98878304432.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c32778ac6---pemoguva.pdfIn PDF document text
    • http://instit.ac/ckfinder/userfiles/files/92856360671.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/22667415185.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16132103ebf4f2---27064282468.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/62377884525.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/94d12d5eb085ae6ded08f60f492decea/gaxosagigol.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/42675959931.pdfIn PDF document text
    • http://yuhenganquan.com/userfiles/file/20210915173752_36055373.pdfIn PDF document text
    • https://www.hkha.com.hk/ckfinder/userfiles/files/25640079897.pdfIn PDF document text
    • https://tiemhoamo.tiemhoahaibara.com/data/dulieu/files/modatafevuravalolivepo.pdfIn PDF document text
    • http://tichdiem.surecare.vn/uploads/userfiles/file/34669718059.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/21018436897.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/53f8d79b73d01c29034d3772eca94f28/wogamazedalijadewofisono.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/mamusupigilafabu.pdfIn PDF document text
    • http://opuspointpartners.com/ckfinder/userfiles/files/dusesuworibap.pdfIn PDF document text
    • http://mothertheresapublicschool.com/userfiles/file/votako.pdfIn PDF document text
    • https://ist-lb1.istanajp.com/contents/files/99570018313.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/susesexogegakiwiteguguxol.pdfIn PDF document text
    • https://asoriofrio.org/ckfinder/userfiles/files/38251173160.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/59909577330.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/podalaw.pdfIn PDF document text
    • http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/pefopilivojaved.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/7962842795.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_off0000e527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE527 11172 bytes
SHA-256: 239790c24edf9ed4ee951f0b9789a608759f3e790cf4db2a1e49164c2e7c5044
font_01_sfnt_off0000ff1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1C 17708 bytes
SHA-256: ee9865a9d5886ecae364a20a2334ac6ca8549f2b6445149eb8bc2fd6e16848fb
font_02_sfnt_off00012d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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