Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce69e490aaa29d5c…

MALICIOUS

PDF

80.6 KB Created: 2021-09-06 21:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: fac369fc3c1247637cc5502ad0b17dd0 SHA-1: a7e6769d34c164a96425559535d92a7901fddfd0 SHA-256: ce69e490aaa29d5c925105ba8fce39c5f71fdf09bbf3b1b1a0142c5094452761
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://cosplay-expo.it/ckfinder/userfiles/files/kufedodalapobowese.pdf In PDF document text
    • https://kamarkosong.com/contents//files/xugimazozivok.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/159ca32a8ad7b0b3ccc319318e2fabb5/10982794641.pdfIn PDF document text
    • https://fwstc.in/userfiles/file/34735009611.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/91990cec342cb62c4cc92d38676c8924/pofofenoxalor.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/0f5796f1f11226a9f9840a94b07100c2/44201270116.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/kexoramewezew.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0c693b4bb---43527864192.pdfIn PDF document text
    • http://gianenricofabro.com/userfiles/files/liwonizodenuwilibupe.pdfIn PDF document text
    • https://godahoian.com/app/webroot/upload/files/86225764838.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/c1a294d03e6b522e80cf99cb065be223/18499315739.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/fajuwogoduripazepawa.pdfIn PDF document text
    • http://aranykoronakft.hu/userfiles/file/47656289706.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/t2ub6ccf905ieai22jh6uektf6/kaxukigovukekumavejow.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/5977766147.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/futuxaraximidupelanaxe.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c39d70311---wumudo.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/7c3ecb91bbf6761ba9b57b071c4b2629/79651546333.pdfIn PDF document text
    • http://progettarecasa.com/userfiles/files/jalasilitolibigami.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/rovalejakupubowubikenilux.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/53d88132644770e26d0b2083b92f9e76/nezamuzuxebapapi.pdfIn PDF document text
    • https://krassimirtaskov.com/userfiles/files/89202849122.pdfIn PDF document text
    • http://letdentalab.com/img/files/bepekatofotiwosukibumefet.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16111cdaed3cdd---revogaxe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=komplikasi+kuretase+pdfPDF 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_off0000d6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FB 17268 bytes
SHA-256: 3e26a95c40d3af6c11ce357c298347eb535d81ac7311ed6e80b963a99a9b3080
font_01_sfnt_off00010447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10447 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5E 10736 bytes
SHA-256: ca618d36784b0a3b3c4fe9c06eb19c71a138b56e427b656b91554fc8a86c6514

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