Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02f3b208aa9206c…

MALICIOUS

PDF

764.1 KB Created: 2021-05-30 19:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b268196d279e7e037585a433ed19e6e3 SHA-1: ac8a5718759f4b30b0d407bab9a132d785184df0 SHA-256: d02f3b208aa9206caf8469779136c507a73f564fbd9778c9abf69c363e7c1ab4
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous URLs, many pointing to compromised WordPress sites, suggesting a link farm or distribution point for malicious content. The presence of embedded URLs and the overall detection pattern indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7794

Heuristics 5

  • 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.
  • 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://chcial.ru/uplcv?utm_term=diccionario+de+psicoanalisis+laplanche+pontalis
    • http://www.bluewhaleline.com/image/upload/File/soxolafadufe.pdf
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/31381953622.pdf
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16092067698616---luzagevi.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae026aedbb5---vudoxizemobajewozibo.pdf
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/355f1f4b5cfcbe4f6797218ea1cf51f0/26166627727.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1a4050f25---11500364163.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16076f1a5543a4---7539472903.pdf
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/obu2an46idkfm7p1ihro0mscg6/60053191706.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/02f6a0266bf5f50d24b14d95cc443e4d/69556852226.pdf
    • http://greenbiotech.vn/uploads/userfiles/file/pujunevelelewirebem.pdf
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a746efe5494---93654463045.pdf
    • https://amatnieks.com/pictures/image/43689245098.pdf
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/434afed913a346d15ff4077d7369089a/meroxira.pdf
    • http://zpb-maciejewski.pl/upload/fck/file/97512969077.pdf
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608144f40223d---gatawolexurokidovafuvide.pdf
    • http://africanhairbraidingsalon.com/userfiles/file/zeloborekeretixa.pdf
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/c95de1610d43a8cf1926e2631db7d2a8/tagalajazulerumurobekijob.pdf
    • http://dok-vo.ru/userfiles/file/gerugiketi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000b9911.bin
fa1472040f0e38701421319fa05ea4f0c56c92176cd96a261889997950de60dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9911 5160 bytes
font_01_sfnt_off000baaa2.bin
6f39b755ee31414aab5d270fea8aa1c1872233f63e3f01b405f44bace6987ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAA2 15104 bytes

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