Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48198eb58894000…

MALICIOUS

PDF

87.4 KB Created: 2021-07-23 00:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7f6df0d7707e24694d351ed3b27a242d SHA-1: 3f26f63aeb3a3ef228fcbd74d97cf2c3b61b3836 SHA-256: d48198eb58894000f45e31a3b69ecbcd4da999ccfc4883a124c455bfac56938c
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains a link farm pointing to multiple URLs hosted on compromised WordPress installations, suggesting an attempt to lure users to malicious content. The presence of numerous distinct hosts and the use of disposable hosting reinforce the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8cf956c5e---nafafesuk.pdf In PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/bd202f4f15b47783237b4b0e5dc6ac3f/37572481910.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbc59f17d3---zogaxate.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/f92ba97cf24bd9b021c8c56f0c3a676c/busulowipiselowe.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/70532916897a191ab276d70b4f3c0e67/xadugejeje.pdfIn PDF document text
    • https://rcot.org/userfiles/file/dozavebumumumazizazagi.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/3270aeecc6b6285cecf05e886b7b7799/11857306565.pdfIn PDF document text
    • https://smobiil.eu/userfiles/files/8450757695.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/kobotidivijowuvuzuxe.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/dcir85fqasq3l13ll8f641aic6/64033093595.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210618181138279.pdfIn PDF document text
    • https://actaviaserica.org/board/file/files/ledimamadufavaj.pdfIn PDF document text
    • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/88bf90d31c7d9e626795a932b6fcaa8a/84423590599.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/noxanakorunevaxasixi.pdfIn PDF document text
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/e2bf2b413f233e90cdb06386e634fe21/59488381818.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/16074784439.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/zatedelimisijapitegifip.pdfIn PDF document text
    • http://seabeachthailand.com/UserFiles/file/15348293979.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6dadf2ecd---rigifuzokumi.pdfIn PDF document text
    • http://asvpp.fr/pdf/60545991879.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f4d47797bcf---meloxobulabijixufilulu.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16240611131989.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7015aee09---29614617062.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/u8lohq28v613a7d6tr51jtljo3/29119253530.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/mutitaxepexilim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=ap+lawcet+counselling+2020PDF 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_off0000ef69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF69 17092 bytes
SHA-256: 414a29f6c64f1168817cec4160f5709e3a5b46ecfaa03e64ff988ff2dab6c5fd
font_01_sfnt_off00011c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C39 10860 bytes
SHA-256: 86794f8a7fa9f0cb5af0ec08f65941aaac0061754a5e55877ca83de85d884a53
font_02_sfnt_off0001359f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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