Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eba1c45f10d9f88…

MALICIOUS

PDF

85.4 KB Created: 2021-09-19 18:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6a8f18a0051e5e9fe4544f6266f81e3e SHA-1: 4a1517a56cde1fdf0b0e6d607901f99d65351789 SHA-256: 3eba1c45f10d9f884b6dc7d8cecf3d17a84381224697f77e2ca57e85ed000917
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains numerous external URIs and link farm patterns, suggesting it is designed to redirect users to potentially harmful websites. The presence of compromised CMS upload links further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://drafthe.ru/uplcv?utm_term=how+to+change+gps+location+in+pokemon+go PDF link annotation
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/bc51797e6c9f26bdbe34864c961bda71/24812090932.pdfIn PDF document text
    • http://csc0851.com/userfiles/file/20210913105549_mzhipc.pdfIn PDF document text
    • https://atlanticcompact.org/userfiles/files/kewewazum.pdfIn PDF document text
    • http://hattingtoemrerogsnedker.dk/userfiles/file/povifa.pdfIn PDF document text
    • http://chinazzjx.com/d/files/58738861555.pdfIn PDF document text
    • http://0965818789.com/CKEdit/upload/files/vurapofidoxifunamaxuguse.pdfIn PDF document text
    • https://agencement-menuiserie-var.fr/stockages/files/21916619495.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/o4qbttppcl3knus65s8qsbpp5n/guvanapalujo.pdfIn PDF document text
    • http://h04ydivan.ru/userfiles/file/94270974475.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/50843434529.pdfIn PDF document text
    • http://fiorenzuolatrack.it/userfiles/files/93321347544.pdfIn PDF document text
    • http://koala-al.com/d/files/gazugan.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/69937949159.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/2955db3cf892656d9fd73d54fd07bd8e/fapesi.pdfIn PDF document text
    • http://chafewyuok.handysociality.com/upload/files/54830248181.pdfIn PDF document text
    • https://windsbs.biz/files/file/ranofupebelora.pdfIn PDF document text
    • http://xn--42cfa4ewb0a0b3fwh.com/imageupload/files/bisukaxudorawepenuwedulu.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e143421b64---kuwididisi.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/2b9aee121b63ba2bb7ae73614c6a5caa/loroveru.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b0f6401b3f---zubituvixajadesowakojof.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/datolobabofuk.pdfIn PDF document text
    • https://gemicilojistik.com/userfiles/upload/file/89785948705.pdfIn PDF document text
    • http://lrm.mcdonalds.ua/ckfinder/userfiles/files/87617553104.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_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001013b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013B 17544 bytes
SHA-256: e0b8bb4975497baeac8a3ac1baeea6dd2442a901c6805b000e1501d8846709cb
font_02_sfnt_off00012eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB8 10892 bytes
SHA-256: 1c944377e5dd4e64727e07c80627a37ea5f82b8555f86760f1958b26167376b8

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