Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60b149c929ab495…

MALICIOUS

PDF

72.5 KB Created: 2021-09-25 23:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a513b0385614ea6342fd7f6f16e68bc4 SHA-1: d8482f7054ff374edca55f55b6c2e155183eac0c SHA-256: c60b149c929ab49568aaa6abd33b6471589c8fafa38f82192d71ec1f1aa65130
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. Heuristics indicate it's a link farm designed to redirect users, with one URL specifically mentioning 'minecraft education edition download unblocked', suggesting a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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://pistant.ru/uplcv?utm_term=minecraft+education+edition+download+unblocked PDF link annotation
    • http://adance0112.com/upfile/editor/file/danalowizuzajutom.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/mukavuzajozumejadere.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/xuvomalujejokazojoxu.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/r78b8ths7426edlopg0ogep26g/xepotewoguratogogeliju.pdfIn PDF document text
    • https://delaneyllc.com/ckfinder/userfiles/files/soxowefobapasosa.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/98360693925.pdfIn PDF document text
    • http://mirsistem.com/depo/sayfaresim/file/157635286.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/27669840525.pdfIn PDF document text
    • http://doingthing.com/downloads/blog/geust/files/65976328898.pdfIn PDF document text
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/5575846844.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/duwubumufamagomev.pdfIn PDF document text
    • http://cornucopiafrederick.com/uploads/files/waxakubakofosumezeja.pdfIn PDF document text
    • http://seamacros.com/upload/file/42552796738.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/golepidafozezisirusugo.pdfIn PDF document text
    • https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/zemegudedunukor.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/xotanotilumalevajiseg.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/2c79d23aded68136c15ab9ac41b23165/ponizogenuj.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/84442789089.pdfIn PDF document text
    • https://network-italia.it/file/13780490784.pdfIn PDF document text
    • http://e-menu.hu/editor_up/kulesividujagizigusumoxi.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/97347311970.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/kufegolo.pdfIn PDF document text
    • http://hotstamping.pl/files/file/ditegamos.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_off0000b7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD004 10712 bytes
SHA-256: e16249c0883d7e846aae7223b08ff26c27f7a8aa54b227b39a54d2eb67955cf9
font_02_sfnt_off0000e8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C9 16936 bytes
SHA-256: b01e3414459b98cf06e02c6d240eac22b621e220fbb95ed405d75af93871711c

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