Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e9369f177c513d…

MALICIOUS

PDF

84.2 KB Created: 2021-09-14 08:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 9b65b2a463f1d1592fb00ec19db84881 SHA-1: 2bd8226bdae4fbbb0358cec956cb6aa14b3ecb52 SHA-256: 69e9369f177c513dc96933eca4f8c8ceef63a477c95eb92ba4f4293cfb34dfbb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging further supports a malicious intent. While no scripts were directly extracted, the nature of the URLs and the detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://bodykneadstherapy.com.au/ckfinder/userfiles/files/dipexuxazadujefokozux.pdf In PDF document text
    • http://liebherr-tr.com/userfiles/file/30150712705.pdfIn PDF document text
    • http://stellar.ru/ckfinder/userfiles/files/22005323991.pdfIn PDF document text
    • http://ozhelalikram.de/resimler/files/fetijifonowigutopikotifub.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/66779545062.pdfIn PDF document text
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/tetowositetinuzokejumijad.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613740900cb46---nojowikojonokuto.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/71643422964.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/xelewolulezidozebo.pdfIn PDF document text
    • http://profitoolinfo.ru/ckfinder/userfiles/files/zujetuvaboruwogopo.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/5327756817.pdfIn PDF document text
    • https://propiedades.net/ckfinder/userfiles/files/nubigofovigokexufujitovi.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/zabekimeseg.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/072e10c1508e7e01492b97a13f298780/lokomuduf.pdfIn PDF document text
    • http://tcsklife.com/filespath/files/20210909050259.pdfIn PDF document text
    • https://foodexgida.com/uploads/files/77174037710.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/41283238298.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/82197272510.pdfIn PDF document text
    • http://chiangmai-esc.net/user_img/files/zuliwumovunewotilunux.pdfIn PDF document text
    • http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/vuzilivukol.pdfIn PDF document text
    • http://stellarvvv.ru/ckfinder/userfiles/files/59462924986.pdfIn PDF document text
    • https://eghamatkade.com/basefile/eghamatkadecom/files/tetanubimanunuzurukuse.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/38423446646.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f491cacae5---lizuresixazigaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=download+lego+marvel+superheroes+2+apkPDF 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_off0000d9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C7 21380 bytes
SHA-256: 88550d74f77c98533c7ff9aba14ed7f4f9e03568b72c745cb2329d91d53d45b5
font_01_sfnt_off000111db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000129f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F2 11116 bytes
SHA-256: 7e7778526295ca797d6e7a2514c173cb57046ac8af4f30225ee725f7e85efe45

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