Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f1947af06977f7…

MALICIOUS

PDF

98.4 KB Created: 2021-07-13 16:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 209fc09c7d3def064873e91a855c7f1d SHA-1: f8be4c294824a865f8b9536accde1c3063d01dae SHA-256: b0f1947af06977f78c89ebafebd1838b3fb18eda7799533ddf3c05544a1a396f
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/v12vjdljivqc72mc9cmjv9i3fr/85990461138.pdf In PDF document text
    • http://baigeleather.com/userfiles/file/vigekililuvoxolunemajanew.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/punafilemev.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/15455b99a4313fe83973b0328d4bcd8d/73585639197.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/58346359251.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/wowamoxunuwanefam.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/mezugapuxi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/c703cf7f2cbe0e52a579f2d5081f147e/kitilef.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088979f3234f---80469404385.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/neruzetedelefobi.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/wujatitadepewopoxedepoxix.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/4942931dc60a2a1f24610839048da078/36738983866.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160ed124509fbc---43851639750.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d06adc0056---lebakegebubesaved.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/3989188093.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa9757cddd---rovade.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/a606fe817a6338376592cc7580bc91eb/koxopiposebewo.pdfIn PDF document text
    • http://zae.me/datafiles/file/23866121602.pdfIn PDF document text
    • http://saydersan.com/firma/files/93726820941.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7bec393e6---daxelafajebesibixefa.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/svdko07uq3far410i4tr3de2ds/71908807551.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/zexuriruniku.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086862d00e10---98794527731.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/9e2d93ed43ce7ab02f368020e633346a/tujorutofama.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/75143129468.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/ca28f312d1b0b01cab1ea4f62e5493d9/wefime.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=serie+streaming+vf+game+of+thronesPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 10756 bytes
SHA-256: 453af8d47b6c1811534c347fc87e51be5c77dd552a4d1fc6b1d1f0e6f68c6b2c
font_02_sfnt_off00014d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D60 17784 bytes
SHA-256: 4db7bf5976ab6eccb517c10e0d0fcf8acd1477fbf5fabdf1485d05ed5b1acf6e

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