Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f296ed5e771dfd…

MALICIOUS

PDF

77.2 KB Created: 2021-09-12 01:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 2c1bd27eda31b0f5b34c1d4a83be71c9 SHA-1: 6b6e9bbde5e834406db482165fe3b4f773f5bb8b SHA-256: 76f296ed5e771dfd6bb3ab1ac43af5cb88fae3c5b7fcc4f3f27325b975cc59b5
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is unreadable, but the heuristics strongly indicate a phishing or malware distribution attempt via a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://gardena.crazyrockinsushi.com/uploads/files/xizebezi.pdf In PDF document text
    • http://evo-models.com/uploads/userfiles/files/zofoxumus.pdfIn PDF document text
    • http://alkanboya.com/files/file///48167604358.pdfIn PDF document text
    • http://giadinhlaurenso.org/upload/files/sekunekakelavogo.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/felepubejubela.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/zuwewofo.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613100ca5ae0d---fusokesuzomomoladuf.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/19775322652.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/88171767116.pdfIn PDF document text
    • https://toscanafantastica.com/userfiles/file/66957328728.pdfIn PDF document text
    • https://santevita-bg.com/ckfinder/userfiles/files/gokikobage.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/70ce0n0lgaooe7g99ia0c3hvfc/29888110139.pdfIn PDF document text
    • http://mvdeastudio.it/userfiles/files/48501945138.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-1/20210901103019561542.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/aljq7qri4homcasrror7701lc7/sisowiw.pdfIn PDF document text
    • https://tonmathunglan.vn/upload/files/wobetoziw.pdfIn PDF document text
    • https://cleartunemonitors.com/ckfinder/userfiles/files/80670676098.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/55121886626.pdfIn PDF document text
    • http://gk-eventus.ru/admin/ckfinder/userfiles/files/vubiludawatiteforufi.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/60acf5ce0e1899d2b3d656b734e12439/48731800253.pdfIn PDF document text
    • http://levne-pohary.cz/UserFiles/File/33739728961.pdfIn PDF document text
    • http://sprostredkovanieuverov.sk/res/file/fipemiluw.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc726b063d---zolalunigetid.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cba5e9e0b2---94742823083.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=final+fantasy+ix+psx+romPDF 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_off0000c813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC813 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02A 10580 bytes
SHA-256: de8caeff658ecf510062c65c06549463357886ec3a568410c7eb7ca79bdb657a
font_02_sfnt_off0000f84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84A 17944 bytes
SHA-256: 6b725d8c770512c6d2190b1ba633f019b513ad967a5a61b9646303c32840e82e

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