Malicious PDF — malware analysis report

Static analysis result for SHA-256 6008fa21ecd9c466…

MALICIOUS

PDF

80.7 KB Created: 2021-09-17 08:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8db7c5ebac87e14076844ed5d97abffe SHA-1: adb1d21a98b2f25aa6ec1fa25b449585aae7ac3c SHA-256: 6008fa21ecd9c466ab8761d696df008fda735f375fb3d3800305f17ae0932b9c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URLs, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The file's structure and embedded URLs indicate it is likely used as a lure, potentially for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://smidgel.ru/uplcv?utm_term=my+hero+watch+online PDF link annotation
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/16d70c16d25322eb8f2b4e0498203a15/fugezo.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/judojegedezevedetutemek.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021090704184173499.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135e17059d1a---27702404952.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/8cc283f0a494c7fa1f793f163ef36f05/68208663082.pdfIn PDF document text
    • http://biafrapol.pl/pliki/file/virosadote.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/94188284587.pdfIn PDF document text
    • https://saikekanglun.com/filespath/files/20210906212954.pdfIn PDF document text
    • http://cissi.it/userfiles/files/64700560910.pdfIn PDF document text
    • http://chinalabware.es/d/files/15529586766.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/65204165839.pdfIn PDF document text
    • https://un7un9b3rl1pa7-99.com/contents/files/tuwiwex.pdfIn PDF document text
    • http://becucci.it/userfiles/files/88325392040.pdfIn PDF document text
    • http://www.reeder.ee/files/filemanager/38647876460.pdfIn PDF document text
    • http://tdjl.com/uploadfile/file///2021090605193536.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/50233870570.pdfIn PDF document text
    • https://geloracinta.com/contents/files/38760804736.pdfIn PDF document text
    • http://tryinvest.eu/userfiles/files/mabamideluwagurirexa.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/zisuvox.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/juzozivipo.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/45252802.pdfIn PDF document text
    • http://combatkuntao.com/ckeditor/ckfinder/userfiles/files/23900595916.pdfIn PDF document text
    • http://nasledie-sluck.by/var/upload/file/vavuvurodilufoju.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/nutigojiputus.pdfIn PDF document text
    • http://jaqalsports.com/files/file/mozonar.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_off0000d791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD791 18168 bytes
SHA-256: 82d90cac22a05d9e4c31b90433959b86344cdee0c0c52cc7f3cd1e70d930625c
font_01_sfnt_off0001061a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061A 10352 bytes
SHA-256: ee70caebb8a293a2780a699d039b107c363d418fdc9bd9a865243a4bc710994a
font_02_sfnt_off00011d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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