Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f65229cd7962dc6…

MALICIOUS

PDF

82.6 KB Created: 2021-09-18 01:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3d18fd777090fa7f883ec99ff717f95b SHA-1: 23d24e66026cf5a9308f48abac656b13a1edef73 SHA-256: 5f65229cd7962dc697fd1998c5bb03f4019a27b5acb452619dc127a1cda48dde
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be part of link farms or hosted on compromised CMS platforms. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into providing sensitive information, such as one-time codes or MFA approvals, consistent with credential phishing. While no scripts were directly extracted, the nature of the URLs and the phishing lure suggest a malicious intent to compromise user accounts or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://garglob.ru/uplcv?utm_term=imo+apk+free+download PDF link annotation
    • http://maraulsan.com/ckfinder/userfiles/files/nilawogid.pdfIn PDF document text
    • http://eaas-journal.org/survey/userfiles/files/kedupa.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb279e83aa---sedux.pdfIn PDF document text
    • http://ueros.fr/admin/ckfinder/userfiles/files/52963411084.pdfIn PDF document text
    • http://steffis-strassladen.de/userfiles/file/bukab.pdfIn PDF document text
    • http://dkkarsin.pl/img/upload/files/larulexatudepasezixo.pdfIn PDF document text
    • http://viorina-deko.com/images/file/34050615202.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/rojuwubabedokuzenof.pdfIn PDF document text
    • https://abrasco.org.br/ckfinder/userfiles/files/86597287788.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pomikemitim.pdfIn PDF document text
    • http://tokyosushilohaus.com/uploads/files/foluzukafuz.pdfIn PDF document text
    • https://sapporomn.com/userfiles/files/96516111477.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1613af833be756---sogirodolipan.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/xarivabaxudovasovoni.pdfIn PDF document text
    • http://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/xesibonizig.pdfIn PDF document text
    • http://prograsifkalip.com/files/83926249852.pdfIn PDF document text
    • https://webaprint.be/img/file/68023153994.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/80857896674.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16135f1bc3f1b2---48704445132.pdfIn PDF document text
    • https://www.esfa.bg/root/ckfinder/userfiles/files/pikozeda.pdfIn PDF document text
    • http://rigosarchitects.gr/userfiles/file/pidevozozij.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/tezaxitiwiwaxofor.pdfIn PDF document text
    • http://kimsanghun.com/upload/userfiles/file/2021971413587233.pdfIn PDF document text
    • https://sskundal.com/userfiles/file/disovobo.pdfIn PDF document text
    • https://peintures-descours.fr/fichier/files/sewuzeri.pdfIn PDF document text
    • https://chandrakantmusicacademy.org/ckfinder/userfiles/files/xuxeloxalojodademeju.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/61600879717.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_off0000df29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF29 17952 bytes
SHA-256: e2d8686f96b242493f3fcbd377c9feca8bd6f954d10d59d76e891c162ef16f10
font_01_sfnt_off00010d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D57 10428 bytes
SHA-256: 3486bf7be9bffc0424abb26f6fe635bb4bed62c5ce27f4acf1ffddf810b9fe15
font_02_sfnt_off000124f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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