Malicious PDF — malware analysis report

Static analysis result for SHA-256 47117ff3450707b7…

MALICIOUS

PDF

85.5 KB Created: 2021-07-25 09:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: af546d5555530ee320aaa5e92fdf4b6c SHA-1: 4ded0678e1de8ad6ba40c8115efb7ba2cab8433e SHA-256: 47117ff3450707b732d01745f59700d105f33e612fce3010f006406dcd363010
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute further malicious content. The embedded URLs likely serve as lures to trick users into downloading additional malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f880a5877---80276148412.pdf In PDF document text
    • https://daquin-ferriere.fr/userfiles/file/83206723964.pdfIn PDF document text
    • https://oglethorpeclub.org/~oglethor/UserFiles/file/24680949277.pdfIn PDF document text
    • http://begemot-rus.com/uploadfiles/file/2021052901333073499.pdfIn PDF document text
    • http://xn--9d0b102a6wc3y4a.com/sa_upload/userfiles/file/20210718220655.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608d15c5919a3---lumomu.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/wulegokakekolilesewamuze.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/5b9919b0f5aa78c70efcee2ec9a19e0c/69054284311.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/27464889382.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/komevemubapozosurul.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/welisapubipen.pdfIn PDF document text
    • http://parkergeneralcontractors.net/userfiles/file/nileraledelurareworanefuz.pdfIn PDF document text
    • http://paitoonbox.com/userfiles/files/50917575938.pdfIn PDF document text
    • https://rainbowfurnitures.com/files/files/valediwifevivupa.pdfIn PDF document text
    • https://fairtradeportal.pl/userfiles/file/zinotiziwojapasa.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607c178b474db---somifogevav.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e26dca25a5e---fileravixopu.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16081fe39e2025---55698849938.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/af3r96kcv5esq91and0u6sa4ou/dujigalujiparonademo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=descargar+jumanji+2+pel%C3%ADcula+completa+en+espa%C3%B1ol+latino+youtube+megaPDF 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_off0000d606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD606 17884 bytes
SHA-256: 9d8ad2725ad961d62f47af03f42d20c39e0978bd3d05aa379e487335b4508593
font_01_sfnt_off000102cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CD 11588 bytes
SHA-256: 4d2dd8a498f517a1910a7f5c5740f306bb80851fd3e201aee9aadca2b8295249
font_02_sfnt_off00011de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE3 3552 bytes
SHA-256: 4b7b6833c4db5e9706438734f3d83e34f88c8682d8900d6900841b4416aa8cb0
font_03_sfnt_off00012bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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