Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c2f251849ebb40…

MALICIOUS

PDF

99.8 KB Created: 2021-06-26 04:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8a4f375099c8c6a93d58a212ada61a56 SHA-1: c036ea8dc8332da8c1792d6a6b490bf2cef9c236 SHA-256: 07c2f251849ebb40dc615cccedc653d67f0c3e940ede788822c8ce1481f1f897
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, with the document likely serving as a lure to external malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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://awlights.com/wp-content/plugins/super-forms/uploads/php/files/3d1b7116096174f793997df36f0ccbf3/20528668106.pdf In PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c93455e60b0---talofaxoradonexigolu.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/e52f3544d699d8c492d6cc8a1d497cef/fegokixije.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4f74f2cb0---19956764504.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/18f2526f7c1c955179b1b87300ca4300/negosuwogejuxit.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a8e646967---53815972462.pdfIn PDF document text
    • http://better-pharma.com/images/file/files/takejevodor.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/dopolugegi.pdfIn PDF document text
    • http://taiwanglassgroup.cn/userfiles/file/meworajejekuxijilakawo.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2sgj4hbinmchb3o9kn1n9o8n04/rupesitoxik.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9827aa0873---pekesexomakopemir.pdfIn PDF document text
    • http://poorclarescork.ie/images/56278603115.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/086d1d6bb784df7b379d35098b38bf2e/56194758646.pdfIn PDF document text
    • http://poorclarescork.ie/images/53109644191.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021060706294238.pdfIn PDF document text
    • http://sillajen.com/fckeditor/_upload/file/54999509865.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607decea45ef6---dujerakidafun.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/69adcd6c277024d963d5b12fc63d5a12/96454589626.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/9cd30dadf17833002faba8f7d1fc525b/94416932396.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/56251575998.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160798fd4a1807---99008384924.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b64d7da713c---47490638057.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=in+the+world+but+not+of+the+world+scripturePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001088c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088C 16804 bytes
SHA-256: d495005d9977623886a80ea0151594f265834ef2518e27fe1b4b141106224a68
font_01_sfnt_off00013429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13429 10832 bytes
SHA-256: 9a09103f04e730be71f8c970cc1b55fbc2cc169602e9d6a293c705fe1dfd2bf3
font_02_sfnt_off00014cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CD9 17460 bytes
SHA-256: 163678c258d2da1969300b75d4fe4571f7bee842ba7630469f6a03f1d74eb974
font_03_sfnt_off00016779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16779 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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