Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0e0945aaa28b19…

MALICIOUS

PDF

92.9 KB Created: 2021-07-02 06:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 7f25850bc5e58c938e0eb0113bed72f3 SHA-1: 14253cc2b6a973dec58070f47a8517126dc6a949 SHA-256: ab0e0945aaa28b19e05d24747fc0303442d7d4b89a4738d7045f78865c50acb5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous compromised websites, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/bc69dd0557bbc177d3c0afa2f9a2a365/63885042324.pdf In PDF document text
    • http://sevgineslianaokulu.com/ckfinder/core/connector/php/uploads/files/dibajadufafiloj.pdfIn PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/gr4q9v32ttcbcupn6c35jlok5a/gomiritulebudizikomutixi.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c55e63a4c1f---favozeperoxon.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/mopufixetemixevuleri.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/c9f5a4e761723937a495ab7deebd7447/bozipijolovotefosarepuxu.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/ur0jpvm041u4na9lep1sl18geh/95722094141.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075bbda030cc---romamaleb.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cab214f049e---duritozewomobitapena.pdfIn PDF document text
    • http://lagunaapartman.hu/images/user/file/55247933486.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085c37f24de1---kumesitozivifavukubor.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/a78f5ffb794c16acc364c8ebf596cdff/53463788613.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2524819bc---63438342841.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/13630359681.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/34398834824.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6bfdaaa7b8---kiwomivag.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/e7955821d0190cfcf7d9b9ffbfc9dc9e/74664410319.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160732704bde29---nawavepeguzesedujep.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/43654462922.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/27688766736.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dde6e21b7a5---solopemakipag.pdfIn PDF document text
    • http://barsugo.com/ckfinder/userfiles/files/29421938138.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842fb63f6c2---vegujuwojilokizubuji.pdfIn PDF document text
    • http://grawerlik.pl/userfiles/file/39690719839.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/290a7e747f155472b9fd0806fcea7b0b/lolorofepuvosafifuwa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=what+does+trich+meanPDF 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_off00010873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10873 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12085 18152 bytes
SHA-256: 921efd758c78ac7fe3fc16f7c23706fc220d4669090b370bece04bb2374c006b
font_02_sfnt_off00014f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F6A 10580 bytes
SHA-256: 3314c72b1dabfbda369baf2e175886aae6f5d6ee97a388229b144a9d19bfc650