Malicious PDF — malware analysis report

Static analysis result for SHA-256 89dda072462f7940…

MALICIOUS

PDF

74.0 KB Created: 2021-09-06 09:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c978c57c2638c3125da0cda7bb349ae1 SHA-1: 7dc2e00b4d1e48ce58be94fa348a81163b333225 SHA-256: 89dda072462f79404fbc89dd88dd215f8b24394179e3de1d8b831d19e95c5d2f
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 WordPress upload directories and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

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://orderkiwicafe.com/uploads/files/momexuke.pdf In PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdb3bb3999---35135765592.pdfIn PDF document text
    • https://kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/65919507670.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/kelumunazenep.pdfIn PDF document text
    • http://g-shocktou.com/user_file/file/87634720513.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c40354844d1---takisow.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/selagalepodiniwekavi.pdfIn PDF document text
    • http://unibox.lv/files/text/sedezovusizomer.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b9935c5d073---bitefofegugog.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/fbfe20b2dea9f93073d294f8af5ffe8d/mibaserufijuxela.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/iug73qmm1o3tihppqrm2ptod35/85351855411.pdfIn PDF document text
    • https://fallsplat.se/file/kefetoluvupepofujemawok.pdfIn PDF document text
    • http://denge.aero/upload/files/pusegobimiw.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/butulamegipita.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702ff4d0178---98985144730.pdfIn PDF document text
    • https://ikima.fr/uploads/file/62454510324.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/e6f3b65b4d1e12cf01e336a7c2678729/34073511657.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/9cea9de93b5048003fa9a475b7e34b24/juvurigosekevugi.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/9230817149.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/20190073140.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/86611448447.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/7cd8e2aece8f53f1ba361c2e6a98a54f/dafiximegatekolobowowu.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/76665628264.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=plant+life+cycle+for+kindergarten+pdfPDF 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_off0000c0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F8 10836 bytes
SHA-256: 25f0739e99e0aaae46b532c91e65920f09bb0194a11ae1f82f854e93f6745ca5
font_01_sfnt_off0000d9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f1fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FC 15980 bytes
SHA-256: 96d14455ba9ab9a8281aaa7e9d078aa86d3ad3d7d834bb945709e6bdfd596834

Open this report in the interactive analyzer, or submit your own file for analysis.