Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bf70606b3bee27…

MALICIOUS

PDF

98.2 KB Created: 2021-07-16 01:31:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7013b16dbc1bd370b9f0ca0ddf1a5844 SHA-1: 700e7a13bff847472d5e07813cfa715d7cc3a9d4 SHA-256: 89bf70606b3bee27170ddbd61d19c08caa6519a90bbb811196dccbec03d60425
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution campaign. The embedded URLs, such as 'https://drafthe.ru/uplcv?utm_term=life+is+what+you+make+it+novel+pdf+download', are likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://drafthe.ru/uplcv?utm_term=life+is+what+you+make+it+novel+pdf+download PDF link annotation
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/d90a36ca8aaddf7b903706383e25ab51/tasuwuturalutewokodike.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f9c956e765e52dfe5811c85f34d349c2/19187111031.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/3b2dd0a430a792bb99122150b390f305/poritutidibi.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/juzugufidano.pdfIn PDF document text
    • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607911c7b20f6---34264702495.pdfIn PDF document text
    • http://aisef.org/uploads/userfiles/file/file/sedoke.pdfIn PDF document text
    • http://global-insurance-broker.de/downloads/12967622659.pdfIn PDF document text
    • https://sentinels.ro/userfiles/file/9969830787.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/f66783028b103bac7e15dffeec5f36f0/visolujin.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16087a497dc3c6---xiduxavuzexo.pdfIn PDF document text
    • https://ottenburger.com/userfiles/file/kupetivan.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/40930234718.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/e5272c214027cb225b873881c90c48f5/gimuzavaxotexatonepive.pdfIn PDF document text
    • http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/zutegabumovanedulosude.pdfIn PDF document text
    • http://volamtuyetthe.com/userfiles/file/gakamobavad.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/8e967c88e10b8407ebe6b55e8a356b09/11659692288.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/22022951753.pdfIn PDF document text
    • https://agmatbaa.com/upload/files/xenunudukapewopozutawizo.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e0d6561454d---73383040076.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099fe83a931b---zerasoninuneteja.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/i2g8cdk31jq7abi0e41hkq0s61/dofufulatumofebamigob.pdfIn PDF document text
    • http://atek-ent.com/upload/file/82232567743.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/28a11eb5f290d8de1e8fc28a002b9b5e/68700572550.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f52f7d944c---24052611395.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_off00011bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBD 17460 bytes
SHA-256: 6d5882e2f62ddc755fc6d627d333a08f68d30c7b8ecb60c1d1af3b1ea9282c32
font_01_sfnt_off00014975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14975 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001618c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1618C 11076 bytes
SHA-256: 0d8bb872661ab20436437fcd7104ae253c39b2a7566f149096978b577d34a27c

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