Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb21d1895ba0e4a…

MALICIOUS

PDF

99.7 KB Created: 2021-06-18 11:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9cd9fb741dc5ce1cc800e97a8d04703c SHA-1: 56d18de5e4401a42ba4f15fdbac9aa082e22180f SHA-256: 2eb21d1895ba0e4a7fd3c145c73f3565b894860b351d2e6503e532c058538c50
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The document contains a link farm pointing to compromised WordPress sites, suggesting an attempt to distribute malware or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/sbemjtfmb0ec0tmaqllbljv20l/60500190758.pdf In PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf262b3a13---68271425969.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/trjk8mr8onlrht5lem5set8j14/90722106822.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/4avai5lkdeu4o42fid4m7ucnr3/31063530585.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16077bf49cd444---67445578998.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/fukenalineluxexefoguzu.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/b8a8c4knk3prahvlvm6hjij2g1/28945778943.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/gmhdph5m6pmijiqsuphtkdh1r6/45182069824.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f23f5e961f---bikar.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/sewivomatifuwonu.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a03142cf901---rimefulifobidupusote.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/wonazivipafelerepaxufeme.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a854fae2666---33082855619.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd9acdbb9d---85391260921.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/jvh0n7po9cke7ngu3kv87hnfsh/gilinetejurutusamulesig.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/zozelupijaxuzefeka.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/b736c2492e70fdc5b7a58b449e4e970d/72539914465.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160713ff58d2fb---kukerememaviwimavorolaru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=learning+license+test+questions+and+answers+pdfPDF 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001398c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1398C 5480 bytes
SHA-256: e367f0f523bbc778de1451bd31e2de8d14021baef416643f86046eabcbc2f5c4
font_01_sfnt_off00014c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4D 12640 bytes
SHA-256: db1c7806b4d3bfd16e50017a1ebd88726fe0dbca6861230def33803f89acde90
font_02_sfnt_off0001763b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1763B 2752 bytes
SHA-256: e91e5ed774118e394b1b2e1127f4f46eaa9a0832840f1fce1a875413dfa5fc03

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