Malicious PDF — malware analysis report

Static analysis result for SHA-256 f060aed0b51d7323…

MALICIOUS

PDF

73.4 KB Created: 2021-09-01 05:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 258312cd513988d5b971c31091e40402 SHA-1: 3f1f2a73dfa51f4615176f90e3c0f8f2d203388d SHA-256: f060aed0b51d73236acb2689a57bc18a117009377d5bfa1f58a12f13623ff819
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution through these links. The document body is heavily obfuscated and unreadable, providing no direct content clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6236

Heuristics 5

  • 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
  • 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://cochu.net/resimler/files/22262776726.pdf In PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/35992568559.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6662eb79f---zorodavafedakeguf.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/eb79ca5a079acfa66ce6ab9a159d3269/jojusimuwor.pdfIn PDF document text
    • https://inmaabiladi.com/userfiles/files/gipen.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/877d94d7bea440fefb2070f9036cd454/wonolumetiwunevitoda.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/pgo0m47f5fqsmpdt0b194qn1o4/99313958259.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160728d391b666---pawerelojavelafodakejulin.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/7c2774daad0ff2c882654a9ba9aaed86/bogaxamiguvazobize.pdfIn PDF document text
    • http://life-homeshop.com/asset/uploads/files/44633232065.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5808d581c---fotafesatoletobub.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/b4ce1f524d789293908d55fb119afbe4/wamemeraforu.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ab58c6d8d---nuzirilazonisibabed.pdfIn PDF document text
    • http://grodgolf.com/clients/f/fd/fd83fa7079552abb47853a85229f74c1/File/60824827522.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160dd840e4bcfe---83163709482.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/46982445654.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/72670195517.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099deffe8a83---vabosige.pdfIn PDF document text
    • https://xehowo24h.com/images/ckeditor/files/vezafemora.pdfIn PDF document text
    • https://sca-eagleegg5k.com/ckfinder/triplebuserfiles/file/kapovazobomusulit.pdfIn PDF document text
    • http://reunionclass.com/clients/7469/File/73621049175.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3669fea167---21395702898.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1b8433de2---biwiwulakopu.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/5ecd498e5d082f25a0e5561e8b954cd2/pezujiladuniripiladapefaj.pdfIn PDF document text
    • https://bruceautoservice.com/files/file/vokidurufuvo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=download+baby+lullaby+mp3PDF link annotation
    • 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_off0000c9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C1 18648 bytes
SHA-256: d1e70e06b657aff8f4a6850333ab66d533df16f3e28a66ee35275b9594b12356
font_01_sfnt_off0000f8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000110c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C1 10576 bytes
SHA-256: c5e8071950efef0104a8fccbf5cb8706c3e4cc93a85e3d4164f0b44a4486aa35

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