Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adb6b93b72ff48a…

MALICIOUS

PDF

84.4 KB Created: 2021-08-25 00:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: ee37ba58ee0a3d13df36c380fcaeb2f2 SHA-1: c4ae3ca8627c29b5c8c0c780016c88d961a195c1 SHA-256: 7adb6b93b72ff48ac3cb61e3d09b68f5fbb891154f0dfc981ee2c2f9b62b44ea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV both flagged this PDF as malicious, with ClamAV specifically identifying it as a phishing trojan. The embedded URLs suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/8ca1454779768059e03dee3d94f66972/16175069939.pdf In PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/hi1i5g4k6di3b9hb2e98d7vp3u/japawafis.pdfIn PDF document text
    • http://wonikqnc.com/upload/editor/file/1622793621.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082313fd9287---zofurunowitofu.pdfIn PDF document text
    • http://hoshitorionline.com/uploads/files/lunob.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/l1ids9uf7al8mc7srbh0keutt3/36856395746.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607897a390d3b---82909174273.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160feec3713505---50253376839.pdfIn PDF document text
    • http://abnicum.com/files/file/40461740018.pdfIn PDF document text
    • https://planet-pvc.com/upload/files/41619062909.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/722aafafddf4da11a9ae6c462bca5a5f/85859575043.pdfIn PDF document text
    • http://aostavet.it/userfiles/files/wanuwidusoxideve.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210624_AC65FF1D765DD830.pdfIn PDF document text
    • http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/72387602021.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe92ebfcdd---gurexorar.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/pirevilejisiwileru.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/tavezakopixed.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/59831992439.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/876d7vr0tk03ofptnu6c0j83b5/dusejefejitidifeso.pdfIn PDF document text
    • http://quincy.pl/ckfinder/userfiles/files/rirewiladugonabiliduveto.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/dezupa.pdfIn PDF document text
    • https://taxforce.nl/userfiles/files/79479930695.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d4d281a7e---92566053451.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=palpitations+after+eating+chocolatePDF 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_off0000e87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87B 10760 bytes
SHA-256: 257dd72aa355a0af4f21031f9fbe69191f88c0c211ad1c33b392d47a855fb689
font_01_sfnt_off00010133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10133 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11945 16436 bytes
SHA-256: e74bf9f9b9d18e5fd18ac1239c78bb0c6e3757b694e58edf55ed20e01aaf0337

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