Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d4d055127fb636…

MALICIOUS

PDF

82.2 KB Created: 2021-09-16 20:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0e77812a7416b99d072f8774f7705164 SHA-1: 31ff4c9a2ee78d3d9d9505848a2a1a4479803deb SHA-256: e7d4d055127fb636b0b536645234d8de9d6ae0a354fc12444e0a24c12d84dcbe
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to websites hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution through these links. The document body is heavily obfuscated and unreadable, providing no direct content-based clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://eluvial.com/sites/all/sites/eluvial.com/files/matoxojonaxudigaxodot.pdf In PDF document text
    • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/28336041533.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/vezidojosa.pdfIn PDF document text
    • http://sh-songshi.com/admin/upimg/file///977499735.pdfIn PDF document text
    • http://hasyo.net/files/file/86547287454.pdfIn PDF document text
    • http://ccadl.com/files/20210913015322.pdfIn PDF document text
    • http://montpellier-business-plan.eu/mbp/upload/images/images/upload/ckfinder/49736353338.pdfIn PDF document text
    • http://restavratorstvo.com/ckfinder/userfiles/files/63872396332.pdfIn PDF document text
    • https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/xalefiwimepametumum.pdfIn PDF document text
    • https://mondoaudio.it/img/uploaded/file/6020408567.pdfIn PDF document text
    • https://33mobility.net/uploads/files/45713748556.pdfIn PDF document text
    • http://terralis.eu/catalogue_dynamique/file/vipekebabomasaziwaf.pdfIn PDF document text
    • http://nuklearmedizin-amro.de/userfiles/file/lamuvadaxefazedonoji.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b5f4496be34079ec2aa5bcac93417a0c/pipen.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/jogaminisajap.pdfIn PDF document text
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/86771057718.pdfIn PDF document text
    • http://kbidc.kr/upload/editor/file/1631163835.pdfIn PDF document text
    • https://people11people.com/uploads/File/godaturemamixubivevi.pdfIn PDF document text
    • https://needletherapy.eu/upload/file/nazuforekejoramaze.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613847718d68b---22253890221.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef01ba686f---83969521925.pdfIn PDF document text
    • http://www.synagoge-stommeln.de/ckfinder/userfiles/files/28341609949.pdfIn PDF document text
    • https://rockyhotelsgroup.com/uploaded/files/54762354267.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+read+gps+coordinates+androidPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF3 17280 bytes
SHA-256: 6f9f05c9bcf21b0ed69a4dcdd141d4843dddfcd5126e295d5edc3cac3278906e
font_02_sfnt_off00010989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10989 17136 bytes
SHA-256: 9ce58ebfdd0736078e01f61f0b8090dba9ecc27fbbbf7932060d7430f591268f
font_03_sfnt_off00012287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12287 10720 bytes
SHA-256: c35bb7d5e7877563eb84f7866ddbcadec06f693daeb653cd8e8f8fc24d9dd937

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