Malicious PDF — malware analysis report

Static analysis result for SHA-256 979a9385bbb55012…

MALICIOUS

PDF

85.8 KB Created: 2021-09-04 06:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 93e01399be886a706130d0302e0a3dc8 SHA-1: e03b4cc63303d6393625a4cef644c317b36588bc SHA-256: 979a9385bbb55012a0ee6585cb6597252ce5d8c03c5900023862bd10e1bee192
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis reveals it functions as a link farm, containing numerous URLs pointing to various websites. Several of these URLs are hosted on compromised WordPress sites or disposable domains, indicating a potential phishing or malware distribution scheme. The PDF itself does not contain executable scripts, but its primary function is to redirect users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4862

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 https://huntic.ru/uplcv?utm_term=cuneiform+numbers+worksheet PDF link annotation
    • http://a-pro-peau.fr/userfiles/file/tepureburutiworej.pdfIn PDF document text
    • http://rbc-bezorgdiensten.nl/upload/59201240672.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbfc5c14091---22967215823.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/bugiritotemolomuroba.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/45110054642.pdfIn PDF document text
    • http://yuhao-tech.com/userfiles/file/nefexidu.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/9c4d5ee1239954187e2890eac52e6947/zewafujetevif.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074b9286d6ba---fumifatubemefag.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/vobqjbhd7t67ou7shh6bm4g3h3/zemeviwakabokukivanagepop.pdfIn PDF document text
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/1004439112.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/jimatazetelolasex.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c878a75476e---74205083859.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/4ca0d9437f86ab1905ff38af9dac492a/fogabupewifazakukolod.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/cf55fa25b44468e2074412d54e97e66e/8375794871.pdfIn PDF document text
    • http://hattingtoemrerogsnedker.dk/userfiles/file/vodewevimojopuvegu.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/42355236047.pdfIn PDF document text
    • http://confidenzacsapagy.hu/upload/84493154534.pdfIn PDF document text
    • http://www.badischer-kunstverein.de/ckfinder/userfiles/files/75462151690.pdfIn PDF document text
    • http://zerosquareonline.com/file/vebekodebopebogi.pdfIn PDF document text
    • https://mytalk7.com/_UploadFile/Images/file/mabetokusikulewe.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608439d56f4c9---mulukotukabavop.pdfIn PDF document text
    • https://cairparavel.ro/app/webroot/files/userfiles/files/66589247840.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11081 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12898 10720 bytes
SHA-256: 5fe390bdc2d23fbfa22381c64df343a30ff354fdfde49934a5b5aee3c755dde2

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