Malicious PDF — malware analysis report

Static analysis result for SHA-256 beeaba66584e1644…

MALICIOUS

PDF

128.3 KB Created: 2021-09-06 17:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f2d8f3a134fa9ff4e2db9d49cba9ebae SHA-1: f74a99ce0528b14da0b1903693297b1bfb981b03 SHA-256: beeaba66584e164497cbd36abeef2ef441bc62496b151587d81ce2d8b9c29ae8
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document attempts social engineering by prompting the user to install a browser extension or update. Numerous URLs were extracted, many pointing to compromised WordPress sites, suggesting a distribution mechanism for malicious content. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics strongly suggest the document is designed to lead the user to a malicious download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=mba+hr+project+report+free+download+pdf PDF link annotation
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823f6b17326---riburesobiribuke.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609f6b2864211---44848482795.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160aacc154ad7e---88531427302.pdfIn PDF document text
    • http://halanmilk.com/upload/files/54992554987.pdfIn PDF document text
    • http://xedaptheduc.net/app/webroot/uploads/files/47324697113.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/bukifoxinik.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/2be5c32be8a444ed3feb6df66a4ae363/47341045929.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/fonekadi.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/rujelivonujamukum.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/88298975450.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/d97bf8834a811e4e5e135372f60fda02/67681925932.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/87367503761.pdfIn PDF document text
    • http://rapet.hu/files/75795541644.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607681e04da43---43282200257.pdfIn PDF document text
    • http://edins.net/userData/ebizro_board/file/tebadesunojumixejuvex.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/vka6btc9vsm7p1d5thf5fs9p32/29220007296.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8a5960d46---zemexududupufitafezuror.pdfIn PDF document text
    • https://zniczekowalczyk.com/user_images/file/revogejawopo.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/34368130319.pdfIn PDF document text
    • https://mimpishio1bet.com/contents//files/45427149156.pdfIn PDF document text
    • https://keyseries.us/userfiles/file/45104283407.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/pemiben.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/8521627830.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_off000190c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001a8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8D9 10808 bytes
SHA-256: da86f8834e149e1c74b260b0246747b3c65842c7b269572c4b2c0b869b8b4437
font_02_sfnt_off0001c18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C18C 18964 bytes
SHA-256: 947646914608d0727a79c2bef85b89be9a78aa3224999124768a5ad5debc3df8

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