Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda095e67634c594…

MALICIOUS

PDF

85.9 KB Created: 2021-09-08 08:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2338872dd5fdde7b2d562e7b08c4aeef SHA-1: 0bdd0e7db61df83757394e526a31bfc5edcbc45d SHA-256: eda095e67634c594917ab124b131e4ab1d345225b4a3b301f88c6aed8bdc8975
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload delivery. No scripts were extracted, but the primary attack pattern is the distribution of malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 https://archism.ru/uplcv?utm_term=php+parse+pdf+file PDF link annotation
    • https://anmoul.com/userfiles/file/bigibanowe.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/de7ee376bb612decb498a4abc0d565bb/talubekuwiviwetaboturet.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0f99c3e85---93357923270.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/o335ihhrabgguldr9qhpdntob8/bilop.pdfIn PDF document text
    • https://tradingcall.in/ckfinder/userfiles/files/97873583903.pdfIn PDF document text
    • http://syntrend.critical.tw/upload/files/fibobokabuligal.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9351f2bab---makisuxujinisaduvelovo.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2cde9c95e---44623704334.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16095d1432ecaf---novopovapufomupezirisij.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/porobazadifa.pdfIn PDF document text
    • http://www.euro-fly.eu/userfiles/files/75857930720.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/kaduwef.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/katakurasumelovujafi.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1f219bce2---viseserolagape.pdfIn PDF document text
    • http://geoplan.su/userfiles/file/39191171868.pdfIn PDF document text
    • https://copperscraphandlers.com/ckfinder/userfiles/files/87663581224.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3d989d3194---begalipisebagovuxu.pdfIn PDF document text
    • http://divorcefinance.nl/uploads//file/58477049659.pdfIn PDF document text
    • https://fsbulletsandbrass.com/userfiles/files/zijapusotemozakosorep.pdfIn PDF document text
    • http://jdjcnc.com/upfolder/e/files/20210629060244.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/lenifijize.pdfIn PDF document text
    • https://abcoegypt.com/userfiles/files/18730705464.pdfIn PDF document text
    • http://atol-res.pl/uploads/file/rekarutofogif.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_off0000ea65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA65 18976 bytes
SHA-256: 50ce0403a60123bd0e3e5cce90a5631e0ee20fccae5bebbc9f4be7e9e9ae5651
font_01_sfnt_off00011b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B31 10272 bytes
SHA-256: 04683c1e27a98e78c3136e3a10f581112fdcd5bff0ff6efd04d1e6bd0147a4a8
font_02_sfnt_off0001325d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1325D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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