Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0a47a410c13510…

MALICIOUS

PDF

85.2 KB Created: 2021-09-17 03:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 15b4f1f7befb17150eb9b25b51762884 SHA-1: 5740177f58bf430958ab87226c6c574506be52c0 SHA-256: 2f0a47a410c1351015b9ca0afd635d91cfe67a4370ae0198577a2d68dcdc057b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many of which point to potentially compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a malicious intent to redirect users to harmful sites. The embedded JavaScript is likely used to facilitate these redirects or further obfuscate the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://synowka.pl/galeria/file/2922591738.pdf In PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/a18166af561ca5fa8f7cf8ec2efc9926/xofurimivuma.pdfIn PDF document text
    • http://sobateracota.ro/mm/file/26966098331.pdfIn PDF document text
    • http://recrute.fr/files/files/76593871333.pdfIn PDF document text
    • http://reliancefla.com/admin/images/file/90199135796.pdfIn PDF document text
    • http://homeopathyhk.com/files/22817377642.pdfIn PDF document text
    • https://pcetravel.com/files/file/82656716734.pdfIn PDF document text
    • https://lockerova.eu/admin/upload/documents/zosedapimixarilili.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/31341763988.pdfIn PDF document text
    • https://fluffy-chins.com/images/file/bepatevikotikixabuzezoda.pdfIn PDF document text
    • http://albertf.madteam.net/ckfinder/userfiles/files/takumuxubazuxexotirus.pdfIn PDF document text
    • https://xn--80aesyq.xn--p1ai/files/file/94803805121.pdfIn PDF document text
    • http://www.koeru.eu/failid/file/begonixixibej.pdfIn PDF document text
    • http://konyanincigkoftecisi.com/userfiles/file/bijuwipomigasadiwipefova.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/16779934404.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/161357a740cd4f---resip.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/b7a33f5e0505902a3d9d0ea4fbdaa40a/nagorarutololuw.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/63047530612.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/zaziburuvelave.pdfIn PDF document text
    • http://helder-effect.nl/userfiles/file/ponorapidodidal.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141c12402f54---ziladajabodibovadepepuf.pdfIn PDF document text
    • http://nessium.net/userfiles/file/lobatozisebaxi.pdfIn PDF document text
    • http://stellar.ru/ckfinder/userfiles/files/22005323991.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/10019320231.pdfIn PDF document text
    • http://neboskreb-irk.ru/uploads/userfiles/files/39739723885.pdfIn PDF document text
    • https://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/55647745338.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+have+a+live+lock+screen+on+iphonePDF link annotation
    • 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_off0000e8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EF 17344 bytes
SHA-256: 0cfdaa1b455383885189232305a548e464d4d645622468a979dc3111f8b2bc40
font_02_sfnt_off00012e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E14 10708 bytes
SHA-256: ca4c818d8b4bce565c82d7a423978ce60e257bf4811630a9fcfab4ffe1fa7b7e

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