Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2e5c03513c1c59…

MALICIOUS

PDF

130.3 KB Created: 2021-06-29 02:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: bf3d0d751a83d0d8233a4289575b0db6 SHA-1: 999d234a6ed87940a4c52c2483091792e8781279 SHA-256: 3b2e5c03513c1c590c1972393eb898398512365b7db6ed94b37e6a735cd2a373
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised websites, likely intended to lure users into phishing scams or malware downloads. The presence of multiple links on disposable hosting and compromised CMS uploads reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9706

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://smidgel.ru/uplcv?utm_term=through+the+fire+and+flames+harp PDF link annotation
    • https://tiklatakip.com/calisma2/files/uploads/45679621179.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/l9umi32f08874rpn7rnj8f3q1j/70740156328.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/files/pujotopomerefur.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f8bcaf850---90830575402.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/wisimeluboxirodofejiwuras.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/038dbd86ab3894729ea30bb4d85c3973/1882288983.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/997c222b1fa4429f5c5aadfb1f6cc84f/favonidagerulan.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e69bcbec64---29198497960.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d86616f64---18524321463.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/46642509703.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/9a4ca9c2c743417d8236b30a412153ed/lelitimaruxemo.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9cd05a59c2225370cd2f51e4d81c8125/zotopixezumepo.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/66461005055.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/f6581d7a85e83df86d6016729b4421c2/69424419996.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/boripenisowurujibanebubu.pdfIn PDF document text
    • http://emeraldoutback.com/clients/f/f6/f61299a274fa8fdb0c00f5b1ed511d42/File/lusati.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/91531465053.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/m0bdn5c0tlm2aqnn13hdj1goof/84906686335.pdfIn PDF document text
    • http://cherishedmomentphotos.com/clients/8/84/84fe84b553acfcd191e166b7401b6f02/File/90976281432.pdfIn PDF document text
    • http://ktcz.eu/files/files/saresevizabedirubowi.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/76acac0c2d47d72de3d1e87e698d4435/firoxime.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b84676aa713---lakajejebuxetuti.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/9aa0fa3a29fe03fdb171dfe9409bac6d/24033993817.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/38117108185.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/5d527eda15365ce5530872c6444c5cea/zabedisevugosizosexes.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001777b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1777B 16344 bytes
SHA-256: 5cd8a120e106fc2d4fc1855603a636a3ce922decfb1b4d98f17a4a5450337c58
font_01_sfnt_off00018d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D75 11008 bytes
SHA-256: be39298f9b5454d9640e2a4090c0a3996ed270c74380f3602ad26d3b849c248d
font_02_sfnt_off0001a6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001beb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEB6 2800 bytes
SHA-256: 24e9bd0e96d88c0afcbe3afd65d570636b5964d6219ac266e47e03eda7b872bf
font_04_sfnt_off0001ca85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA85 18396 bytes
SHA-256: 63bc20434389877521522e08e66511c4e9736b95923f20eeb0fad0541cb90160

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