Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88269c44844e3fc…

MALICIOUS

PDF

78.3 KB Created: 2021-08-28 07:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e40fcbda915ecccbfd54b3546ee69308 SHA-1: 9e036a694134e7d14be952662d2217947c5b14b5 SHA-256: f88269c44844e3fc0737150a61e4d24855d341b76ca330d2f853f34e7bc24ca9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to various domains, many of which appear to be compromised CMS uploads or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://pixomot.ru/uplcv?utm_term=transformational+leadership+style+definition PDF link annotation
    • http://www.peritaonline.es/ckfinder/userfiles/files/96805661650.pdfIn PDF document text
    • http://sampsonancestry.com/clients/d/d9/d9bd9208c4e45de01aa31840e3a8c66b/File/fatuzagurode.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed6db8cac8---wuwepabixazazopasojufidil.pdfIn PDF document text
    • http://wjcopy.com/upload/files/61807990825.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/g8vpv2754phml7nd0lsbe2mvk8/48309640477.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/923b3ac484ce405d0725a965688117b4/nokeruvamatuguguj.pdfIn PDF document text
    • https://pasifikendustriyel.com/userfiles/file/87716682447.pdfIn PDF document text
    • http://isotech.si/uporabnik/file/fezemorafesusetimudesi.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/ketasiribusalikagurej.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/femalekulerirewovuzerege.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160eca963bc889---wupegizidezo.pdfIn PDF document text
    • http://somsit.com/ckfinder/userfiles/files/27846178155.pdfIn PDF document text
    • http://rexant.by/upload/editor/files/pagufitasi.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/0e9692cd91b3fe18aa0e54a77a5ae057/vibunuxajapivepizadijukat.pdfIn PDF document text
    • http://lor-rostov.su/userfiles/files/nevefugadavezupunedabe.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a44cc48449b---68952433921.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18f4be8566---raligugepelab.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/a2a0890496391057404d23bfb249334f/dusisadegekoxefuraxererok.pdfIn PDF document text
    • http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/koratebejixenubilonetota.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/niviwubuw.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f183e0e55e---nobubamepik.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/zamoduzogitevetalepigizam.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_off0000cbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF3 10840 bytes
SHA-256: 4d48fa06bb1cb99014256c38b0ca02b2e2c98be1b9d8a0f0ba100ee7e0c291aa
font_01_sfnt_off0000e4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C1 18008 bytes
SHA-256: ce2ce8dd372106f316a3577f5d15a6a1eadf394cfdc7d40d07175482a6a7c80c
font_02_sfnt_off000113d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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