Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02012329e4b4575…

MALICIOUS

PDF

76.0 KB Created: 2021-09-17 19:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d7d8ced20dcf8ec8905089f64b24d0fc SHA-1: 1033cf1aada8df4097d276177f076def57325c68 SHA-256: f02012329e4b4575b6e188cb90e24084b6040821cfc8071c5bb6028f69cfd9f5
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating its primary purpose is to redirect users to potentially malicious websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure points to a malicious document designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://synerhu.ru/uplcv?utm_term=pokemon+ranger+nds+download PDF link annotation
    • http://gt-outillages.fr/ressource/site-image/files/59185702427.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613947ea68f11---55536727108.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/kofasafafoxaw.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1b0e19abb---10904373692.pdfIn PDF document text
    • http://traktorpulling.de/ablage/userfiles/files/bajuros.pdfIn PDF document text
    • https://crbz.ru/userfiles/file/tojebidukefejolisawogaxog.pdfIn PDF document text
    • https://isleo.com/i_photos/file/17584947138.pdfIn PDF document text
    • https://fabriziochessa.it/userfiles/file/30695587103.pdfIn PDF document text
    • https://stomatoloska-ordinacija-rijeka.com/files/ponavodiwedujekebunivetat.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/55903932405.pdfIn PDF document text
    • http://mottaing.eu/userfiles/files/562096272.pdfIn PDF document text
    • http://longtra.vn/userfiles/file/sudalumuluzulefofus.pdfIn PDF document text
    • http://confidenzacsapagy.hu/upload/sekijuxilal.pdfIn PDF document text
    • http://studiomarazzi.eu/userfiles/files/nopove.pdfIn PDF document text
    • http://touristclub.in/userfiles/file/nudiparilakepewanewudof.pdfIn PDF document text
    • http://kristiankutschera.de/userfiles/file/fopixazomewe.pdfIn PDF document text
    • http://plenerowe.kbo.pl/ckfinder/userfiles/files/zixisixumanaxowup.pdfIn PDF document text
    • http://e-skala.pl/userfiles/file/91708962400.pdfIn PDF document text
    • http://ceramicaartisticamarsalese.it/userfiles/files/kasipenodisegewuvo.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/12823396831.pdfIn PDF document text
    • https://nasikampung.info/contents/files/50728088444.pdfIn PDF document text
    • https://romalasergroup.com/userfiles/files/karebexovewawifa.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/9ti8tkhnal2b3u89vm9fmf73k6/51063602456.pdfIn PDF document text
    • https://www.posluh.hr/ckfinder/userfiles/files/novetuxinu.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC363 10580 bytes
SHA-256: 89532810c1420ba5f87cbe80f78308742f2e76c9b932270232d67009186e6b71
font_01_sfnt_off0000db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB59 18240 bytes
SHA-256: 8f753911ac071034aa9bedde2e5883b615db40649de15f95fcd87aa9faaeba37
font_02_sfnt_off00010ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1