Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6fc5c49910e35a…

MALICIOUS

PDF

89.2 KB Created: 2021-06-26 03:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: daf98bcc54240ecfb6f95c2828a18c4e SHA-1: 5b1b02c59fbd82790a600ba9fd98a9507886569c SHA-256: 3e6fc5c49910e35a0c935f74ab9f65449292871485a5d10447b25695acceae71
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links to compromised websites, suggesting a phishing or malware distribution attempt. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=download+game+mod+hungry+shark+world
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160a88432d5c9a---46712679635.pdf
    • https://adasms.fr/userfiles/file/42117454720.pdf
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608865f26c0bb---pasedaxoruziratapi.pdf
    • http://firanywiktoria.pl/uploads/editor/file/segikavorunuvirege.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607377f4c58c6---12890349113.pdf
    • https://ludifrance.fr/userfiles/file/lediratoliworibijo.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/hg2id9o83h0q36vd9fifl0ek48/muginomog.pdf
    • http://emirates-offshore.com/uploads/image/file/32294583755.pdf
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/80432937413.pdf
    • http://kasargod.net/uploads/file/41059145427.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc5e27f8d4---pevademebumuxak.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071d0065282a---bawajevobutenipolojogonan.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608262836411b---xeferepirekunizumu.pdf
    • https://paklya.su/design/img/upload/file/94827230186.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/qofvqukongstu61ohf5afdm840/jokuduruzasalipevumovolas.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/9jof9smcjp9226m3mr5vf4ni8f/wotifalujepopokumovemep.pdf
    • http://bazis-expertiza.ru/ckfinder/core/connector/php/files/85262273273.pdf
    • https://pathakpharma.in/singhania/downloads/file/kiwafepavitu.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ee9551188---79596415793.pdf
    • https://mmszke.hu/files/file/kolofamovebawojeko.pdf
    • https://publicbridge.pl/userfiles/file/71375610556.pdf
    • http://catgarner.com/clients/873270/File/rapujubo.pdf
    • http://zoltysnieg.pl/pliki_wyswig/files/7191946503.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9c0.bin
7a723bf086a01fd2da5d023c351d24ef7633a42fcf259c3b20d1e14b20f90c27
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C0 10900 bytes
font_01_sfnt_off000112a3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x112A3 16792 bytes
font_02_sfnt_off00012ab5.bin
21d5091a68d51e788a2e3f2ce6860397ebacd8dad866dbca0265c6668bb70349
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB5 17044 bytes