Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeab9369574083c…

MALICIOUS

PDF

78.9 KB Created: 2021-07-16 01:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a70149372c987bb39b497b7365f587ca SHA-1: 63357b34ebb8b00f8da6c8725e1b655d2b7965aa SHA-256: bbeab9369574083c77094dea047ceeb44e7a5ccfb942528bcc687cd2c503e7ce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://infrive.ru/uplcv?utm_term=withholding+nothing+chords+piano PDF link annotation
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a37c613cfad---85471950031.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608076789b969---vetapegiletoxojamoguj.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5eaadbe40c---pesekiso.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833809569c9---gevopugipumusaza.pdfIn PDF document text
    • http://candientuvibra.com/images/file/89416819346.pdfIn PDF document text
    • http://retroldn.com/userfiles/file/zoretesodarexowure.pdfIn PDF document text
    • https://broadcasthub.com/ci/userfiles/files/38764724462.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/gimipebobojotip.pdfIn PDF document text
    • http://954move.com/clients/4890/File/97759578229.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/37e70a27397db3a39c06db0ea377e5bc/vikiledi.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9d5b33c55---3618846480.pdfIn PDF document text
    • https://xn--fct8ml6mwue.tw/uploads/files/55750167927.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/30234038928.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/ea360c772c00ebe4d13fce2773527263/31655132905.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/bepajipazeje.pdfIn PDF document text
    • http://standartbio.com/fckfiles/file/65180050980.pdfIn PDF document text
    • http://saluteebenesseresas.it/userfiles/files/61611756419.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08fbd46de4---83450775163.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/of9ac1n3uohicv94f5k08l50cc/nujawuxe.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents//files/lasefazusebul.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/922b0db3edf4a0a688611ad5316dd2eb/pojigoneruzer.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/13671439245.pdfIn PDF document text
    • https://brickzoo.it/file/wenanexubipi.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607eacca4ad45---nopesavisaj.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_off0000cdd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e5ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EA 10656 bytes
SHA-256: 490d7c3c3044a7979e6ff8cacad23d87bb120d7bc2ed6e2e3ca38de27ee3c1b5
font_02_sfnt_off0000fe0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0B 18180 bytes
SHA-256: 86cda7c491377f6f09b419f59c615b015e350a138fa6abf4f6821d93d68f7296

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