Malicious PDF — malware analysis report

Static analysis result for SHA-256 60954cd0fbf6c6d5…

MALICIOUS

PDF

77.8 KB Created: 2021-07-27 21:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f7f8b8236e6e7fa649e83842d6165f4e SHA-1: cc08012908202ea2c94b89fd8ae3854cb5b78751 SHA-256: 60954cd0fbf6c6d5930f41fe5243d2d12ac40f8e22e3b26caf1cad28bbe3ba4c
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 high likelihood of malicious intent. The file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. The primary purpose appears to be directing users to potentially harmful external sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/428ac257d5e8e5578274d46f15177191/88425638824.pdf In PDF document text
    • http://viettelhaiphong.me/data/dulieu/files/solowajofazajor.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/me30isdps7mo6k6be51rabksq7/86386196106.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/59495500420.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/neb7o0audkri4fpr4knae0f7er/66914841728.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082bc578a5c1---buranananogidegeserufofa.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e68917e32bc---43046374908.pdfIn PDF document text
    • http://vhktn.at/images/content/files/77174044856.pdfIn PDF document text
    • http://ruishikaishi.com/upload/content/files/2021/07/20210724235823.pdfIn PDF document text
    • https://x-software.cz/data/file/bubozifuzigajoj.pdfIn PDF document text
    • http://biomassasia.net/data_ed/userfiles/file/wizosuzav.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092da3a7c2cc---lakaxug.pdfIn PDF document text
    • http://maility.pl/_ADRESuserfiles/file/pilamav.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0be0e1277---28170013010.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16074462cde3be---dududagiganininaxobebajo.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/56810207058.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/h7c0m22c6kjker85a0bcfcaik6/32614599476.pdfIn PDF document text
    • https://fallsplat.se/file/wedototeneraribozaze.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16095b71c99043---3514572390.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b79d413130e---guxizozadopow.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/e32b5998f21e760f8f1cd4918a428166/miwetumimiwinifabogukeru.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=dupe+glitch+gta+5+2021PDF 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_off0000cda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA2 10688 bytes
SHA-256: 55819bae06c14d57947df887d6dc9ff1d680a7d69be494e3f78dc9986c7ca3e6
font_01_sfnt_off0000e66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fe7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 16648 bytes
SHA-256: 646ceed8cf4e987b0b0be52bb082741533aa84a51c72a657bfa70d11001ea329

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