Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e7ecee8bd8ac3e…

MALICIOUS

PDF

80.6 KB Created: 2021-06-29 21:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 82f8d7cfedadfb5ca8a46f8997218825 SHA-1: 94b3859884df6d8665e44ea63ad0aafdb3ac87e1 SHA-256: a3e7ecee8bd8ac3efeee9f445b0adefbfae2777a0dd3e362c4db7cb99c198598
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. The embedded URLs and the document's structure strongly suggest an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 http://al-bandak.com/userfiles/file/42553633438.pdf In PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/ee18a3deeaa5888e79d1302c20cc75f9/rijadutamowiwogatagesaj.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/abb73ae8f096d77cef606a04edf2b0b1/sikibijoleropikoxu.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160790fd3534d0---donowet.pdfIn PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/zetirevos.pdfIn PDF document text
    • https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/jibemo.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/tezifinobagojofapogot.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/75086768930.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/a2538d0bae19484e09c8903dfc54c559/subiroxovoneteged.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb8daed7ea---65259053064.pdfIn PDF document text
    • http://inglewoodreunion.com/clients/68690/File/sunujalogosap.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/34112719858.pdfIn PDF document text
    • https://medtek.vn/storage/file/5542739096.pdfIn PDF document text
    • https://bookatowncar.com/userfiles/file/76064061230.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/b23e8306328b02d7f025d16f1194463e/21114123967.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a23d7a9b54d---zofidusugawabavorav.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/vefuzegevizojijojetet.pdfIn PDF document text
    • http://backyardreleaf.ca/clients/6/6a/6a4eaaf8452764cb6fc14c9064ed0c71/File/11485003074.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/80518644701.pdfIn PDF document text
    • https://candbco.com/ckfinder/userfiles/files/18357398782.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa6dd061a0---36902370071.pdfIn PDF document text
    • http://thrifty-uy.com/files/others/91422134915.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/uk0l21hfm8er3vhpbqo3h6hsrm/losoneguxobiton.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=chinese+dragon+chinese+foodPDF 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_off0000d9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BD 16200 bytes
SHA-256: 80c166effab6d19eb8d3dc9c01b0165b7f99fb3863d28b22db2a0a1a357eea81
font_01_sfnt_off00010396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10396 10640 bytes
SHA-256: 22cd05025dda11a730b9a946162eda7a365a48c9aaf6e6b494e8373a9f54c377
font_02_sfnt_off00011ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.