Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d6bdb4b9317652…

MALICIOUS

PDF

83.5 KB Created: 2021-08-06 00:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 12199f625feb81beabd345142a66ca49 SHA-1: 2ec01f36db5766be76a8d82889865e0e93175f23 SHA-256: 00d6bdb4b931765259fe5ba71c65fae3439c2a345f0c165a1ea517888902a433
156 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting domains, indicating a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the primary attack vector appears to be the malicious links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://allytemp.ru/uplcv?utm_term=present+simple+present+continuous+present+perfect+test PDF link annotation
    • https://tsegypt.com/file/11135238621.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf7761f073f---zeribawajudowebuvigidig.pdfIn PDF document text
    • http://morebricks.com/ckfinder/userfiles/files/7755110363.pdfIn PDF document text
    • http://autofox.lt/ckfinder/userfiles/files/xovobutozi.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/1b140d252b7c2079cd643997c8ccf846/38420788704.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/93055126689.pdfIn PDF document text
    • https://onhimalayas.com/ckfinder/userfiles/files/lufemenap.pdfIn PDF document text
    • http://cecev.com/stockages/files/jimisifalujilutulogoku.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/2jvgunq93km0un9i1tl5he13c4/90256842545.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090efcdb9e6b---zaxujokajidezigonanaj.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/bubulafuzu.pdfIn PDF document text
    • https://aymfly.com/aym_image/files/47654699766.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/lawuduzawirilozitalobuv.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/e2212213e7991d023ff0600f1a3ca567/kudolonomudulo.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddb1f8c4d1e---xunerab.pdfIn PDF document text
    • http://altinay-law.com/images/file/12655138694.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa5b4bd345---11591181719.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/lgcclouma1u420044rn9b6ol02/20965902112.pdfIn PDF document text
    • https://ahha.az/userfiles/file/66077672797.pdfIn PDF document text
    • http://faxik.ru/ckfinder/userfiles/files/91793890692.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/adfd843c5ead3df49417167968ce0166/53813906901.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/rivamapodikizutejipan.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739428a5caa---66501633815.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_off0000e23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4C 17088 bytes
SHA-256: 66332da05e9c79e1aed6d19c4d141e194c204361efe257269572eb4a9510ad7a
font_02_sfnt_off000126e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E5 10580 bytes
SHA-256: abc902d1c518e9db0d1d1d60471503367f3e77394b3627813c81ac60fa4cb4c3

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