Malicious PDF — malware analysis report

Static analysis result for SHA-256 030da7820530de87…

MALICIOUS

PDF

76.4 KB Created: 2021-06-08 20:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 70ce2cbc81c5ed046670452c61601201 SHA-1: 58cbc0c1e06382b28b800baf761aee70ffc3d20c SHA-256: 030da7820530de8769725142b246d42e8eca8cd5d68afeef0c61ec3c6a5fa947
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution, possibly by leveraging embedded JavaScript to initiate downloads or redirects. The primary lure appears to be a fake download for 'Fnaf the twisted ones graphic novel pdf free download'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://oniceh.ru/uplcv?utm_term=fnaf+the+twisted+ones+graphic+novel+pdf+free+download PDF link annotation
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a62f419f7d8---gajalepitokezusoz.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb838bb742---5599140660.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/sepiri.pdfIn PDF document text
    • http://pamat.ro/UserFiles/file/59259647922.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/c63ssjocmoh6l3k9ghat0elf1v/lezipane.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/38913989984.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/f69f35b2c1d2a2c81bca6f75a630b78d/ridemusadodonoloturinixu.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/nuzixabizi.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/21272004225.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16084d7527a12d---71217749755.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa939dbea2---70165952661.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/guzebadudumanuwevudofuge.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/tupifovazomas.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/vavibamixijuvija.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160aebcb9ebc82---zitalubulo.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/eki0hfc9j0p9sbehj6ft7rp1bj/dokasopoxa.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/a9fbbe48df76440577821c6628ea124a/wuxafutetipidedijud.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/73f343db65bf097f816ddc331e0f9992/pepurupatuwesedav.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/13607366619.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84E 5524 bytes
SHA-256: f4b14c82ab5d315b7d249ccc3acedbeffe0ad26b564384125ccd2105b5a7a6e3
font_01_sfnt_off0000fb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB38 11792 bytes
SHA-256: 1ab246e42d55fee2e2f588e1bb9fd1d417c7160b164a5ec2f6f9dde890af2f48