Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6e77c9774f0d72…

MALICIOUS

PDF

82.0 KB Created: 2021-09-01 22:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 49e03259fed965c11b9b1b3474bb6165 SHA-1: 12eafc7caebe283cdda35e04d5cb7a05e71b4456 SHA-256: fc6e77c9774f0d72cf0bb7abd8f0bd01e726722fd1ebb37ceae996af6232af02
156 Risk Score

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites. These links likely serve as a distribution mechanism for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://pindimana.in/uploads/file/fiwemizedoguwitega.pdf In PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/fed8ad856dadcd10f51c44b5c7e199d2/sukifoge.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6949cd480e---xezoda.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c5f8b6f18e82029abae0a6c9a45f0417/kixibirusoxoresa.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/8936de7c83f8e9e67814a7c8a0a15446/wixofe.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160838fcb4d50f---nisoxapexoturapivumun.pdfIn PDF document text
    • http://ahchala.com/img/file/85692471719.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/a31826b4914bf81b30e8a8560f6cb4c8/95135450556.pdfIn PDF document text
    • https://www.qualityitalia.it/ckfinder/userfiles/files/nofelifezoxelibamoso.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1596c7142---jemilawokopiwenidabuzuvu.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bc8872781---94545719782.pdfIn PDF document text
    • https://www.myosiaffiliate.com/199trust/img/file/xikubafavipileza.pdfIn PDF document text
    • https://ariconium.cz/webpagebuilder/ckfinder/userfiles/files/57180657149.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f052fb4b25d---2267300198.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/4c1b00792875ecc909f60295f75f647c/nososi.pdfIn PDF document text
    • https://adeptos.clevercloud.pt/images/items/files/pulamusiniwoxurenobuzo.pdfIn PDF document text
    • http://pogotowienaukowe.com/Upload/file/67076124132.pdfIn PDF document text
    • http://pokeocncafe.com/uploads/files/kokemizefokadoxawevujarun.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/ebc916706bed147d4887219d2405e989/gurunupukevixokajaza.pdfIn PDF document text
    • http://falerisztika.hu/tmp/46442076430.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/nisokekazupovofa.pdfIn PDF document text
    • http://studiotecnicomancini.eu/userfiles/files/zoxerumodew.pdfIn PDF document text
    • https://ietc-oman.com/userfiles/files/44003388710.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=standard+bedroom+size+in+feet+in+indiaPDF 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_off0000dd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0E 10744 bytes
SHA-256: b37c1b9390e0d94fb490ef37691b43fcf5f85052db0dfd5d227c83ff848be796
font_01_sfnt_off0000f5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 16748 bytes
SHA-256: d845c489df8bc3b6d9c6443c5834afff243be77ecbf213b0b3dd5827a21eb7c4

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