Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1b2ed3d2283ee4…

MALICIOUS

PDF

63.2 KB Created: 2021-02-19 08:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 033fdf83e9a4269fd73d5650f97d1512 SHA-1: 582137cea4ca5a740ae24ab75f5a679aec252604 SHA-256: 9d1b2ed3d2283ee436a916553ec65933df8ba63b2fd0613950711416d2c64dd7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, embedding numerous URLs that likely lead to phishing sites or malware distribution points. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to the document's structure being designed to host many links on disposable domains, reinforcing the phishing or malicious redirection pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=new+unblocked+games+77 PDF link annotation
    • http://reabook.online/printable_hexagon_templates_for_quiltingkho9m.pdfIn PDF document text
    • http://reassurez-moi-fr.info/rojokolowoh49we.pdfIn PDF document text
    • https://cdn.sqhk.co/pamezuravuno/icHLhh3/whatsapp_business_account_means_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/i5gfMLS/fezugekaxoreguvi.pdfIn PDF document text
    • https://cdn.sqhk.co/zinumazak/iFjfBwM/block_square_jigsaw_puzzle_by_hierarchical_loop_constraints.pdfIn PDF document text
    • http://bofesota.66ghz.com/android_file_transfer_mac_bluetooth.pdfIn PDF document text
    • http://mybiol.site/87383352009lr5tr.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/jiahhd1/roroteliweto.pdfIn PDF document text
    • http://livecopyrightverification.com/9630430660457apu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478378/normal_5ff385724050a.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/thrombolysis_stemi_guidelines_australiaobk7l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403687/normal_5fd5f020687aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496582/normal_5fcdacc2b3d9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379973/normal_6006b8baa93b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosopipates.epizy.com/incident_report_template_for_child_care.pdfIn PDF document text
    • http://vasenatisa.epizy.com/information_about_football_game_in_english.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA94 5508 bytes
SHA-256: 66c7bc3be05ce94e209168bdeb5c6ce63adcde9bf8a458e26a13ef0d140cf152
font_01_sfnt_off0000cd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD61 10196 bytes
SHA-256: 09cc9614fcc8787643965bcb21ee77907c240365f7731114d0f3b6ce5069b4fc

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