Malicious PDF — malware analysis report

Static analysis result for SHA-256 09059dae27535910…

MALICIOUS

PDF

83.6 KB Created: 2021-06-25 20:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7087603dd104c6457d1bbef402b51b18 SHA-1: 883109c5d955fb88c41ab4d44d9851ae778ea4e7 SHA-256: 09059dae275359106f6125b66e884c9616b7c8e53acd8fba9f0ad7838120229f
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. It functions as a link farm, containing numerous external URIs pointing to compromised WordPress sites and other domains. The primary purpose appears to be directing users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://cructi.ru/uplcv?utm_term=miles+per+hour+to+meters+per+second PDF link annotation
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/bb4014df249ba1c41618193810d41fd1/12874168258.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/9cac12c2280fd911a76ec08099ed6e19/molamufakewijiviwuw.pdfIn PDF document text
    • http://kasystemofkarate.com/clients/861259/File/91315200704.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/37611475256.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/80362600519.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/gtchsvr6ffcg9agvrmi283cal0/tofoludajovatosiriwebon.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/badepajovu.pdfIn PDF document text
    • https://proxus.nl/file/denopuxageverekejoza.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/82fca75a3ebb7e6e7c0e1b4a4141bba4/badakekuto.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/3b77554547bbe345e6f55b214e32b867/sivugevipudavemo.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/86413569550.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a69df979496---54049141136.pdfIn PDF document text
    • http://simonhoirup.dk/userfiles/file/vakesezedubexavabojuj.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16083adf6025e5---kizizufobixisuxilev.pdfIn PDF document text
    • https://guruamardaspublicschool.com/userfiles/files/81540859798.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/e30h6s4bjrpbdoreu9p9hitt08/gajamawavipaze.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/98004684050.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/84613598468.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/ce87a2cd40ba8c46f8d1ccf8d6ab34f2/88052881414.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/4f58edb75d951fb42ee4cea8a4cf411d/fobizozilogelusutubi.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce3edbc2b0---motukabetikupobugite.pdfIn PDF document text
    • http://maciejabramowicz.pl/upload/files/file/lazafilaxobawomina.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9938f15fcd---69986120680.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB4 16832 bytes
SHA-256: abb71522d3480e202c0dc85d11f95ee86b019ea55a3f16ff92368c4be136e4ce
font_02_sfnt_off000128d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D2 10708 bytes
SHA-256: fed2331647231c33888a9a6f4b6ab5e6a07f944e86b7c9cfe969ef25e55dc2de

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