Malicious PDF — malware analysis report

Static analysis result for SHA-256 200ce3a1fbaf89b7…

MALICIOUS

PDF

72.6 KB Created: 2021-07-17 02:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 81d63ea7b8ea00ea3c6ea0fc8177794b SHA-1: c36f2b5887b46d48a17bab6c59ff6d614d14bde1 SHA-256: 200ce3a1fbaf89b7d9a515d2e7eb6a5695e7a141477b6f34cf670cb7cd7e4a69
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609404e177db6---temisetalefabup.pdf In PDF document text
    • http://auxerretv.com/content/public/file/nizijegogapimexopopodin.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608499102c83a---dekukamovun.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/sunizigak.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/19586341665.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160d42347b1a8a---vinabababerujuk.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/81v28lmgsdnmb3mobv6s8qh928/21987621185.pdfIn PDF document text
    • http://boissee.fr/userfiles/file/zotenobulud.pdfIn PDF document text
    • https://vienhung.com/webroot/img/files/tuwolobesuz.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/59c6a25f1d03bd262fd5107cdf1b8d0a/66674686679.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad91c64d6ff---wokajuwuvakikux.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe2c22c3dd---ravorizamorimejigez.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/77qb49r7dtceods7bind7ks2ko/16988873141.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/1e4a1e7a3f076c94910b1854fcf94b4e/gipudenevagodobigosasemu.pdfIn PDF document text
    • https://amd-export.com/site/upload/file/tigarina.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727aa3afd3a---60929014904.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160884e619631b---62566628633.pdfIn PDF document text
    • https://hirurgija.me//files/pilapijiguzurejaripadan.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/40ed8cdcab380d50c166cf789fe9ef74/fozasirew.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1ea252433c---gojamedusib.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0825c8d90---pibemeronena.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/48910589386.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=lifeproof+water+test+instructionsPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/b5b95e059780276f36dfe1bc56383fda/73592770074.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_off0000bc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC75 15704 bytes
SHA-256: 32aafc62eab5ae7aaedd67a0b2f6d6e781b8a88a043261cf7ca0b7fa9ba15a92
font_01_sfnt_off0000e4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 10572 bytes
SHA-256: bbb0341d27c4dacd4e1f769da91e6b365efa9177570f5739774fb73967baaa1b
font_02_sfnt_off0000fd25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD25 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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