Malicious PDF — malware analysis report

Static analysis result for SHA-256 46aa2ccc97ee270e…

MALICIOUS

PDF

77.7 KB Created: 2021-04-07 07:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76478efdbe889229bbaf9afd7f5f645b SHA-1: 2079e696ac5479f873a8950d4e083c35ffd3d5d2 SHA-256: 46aa2ccc97ee270efdc0dbfa93f8b0697ba5a8085885a030835ddb8dbae26c73
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'Birmingham university school uniform', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/123?utm_term=birmingham+university+school+uniform
    • http://jawirigagoboni.iblogger.org/nozelujemudozaximafusak.pdf
    • https://cdn-cms.f-static.net/uploads/4387582/normal_603651765554f.pdf
    • http://slimitalia.space/39310952917z8co5.pdf
    • http://kersita.fun/zorubupaxupoparulaepkhy.pdf
    • http://usacreditmonitoring.info/55633978206temf4.pdf
    • http://suwubiwutej.iblogger.org/rudizumunibaxivo.pdf
    • http://uanews.website/craftsman_41a5021-3g_remote48d2s.pdf
    • http://hurleyshamburgers.com/clinical_cardiology_made_ridiculousl9npxe.pdf
    • http://atelier-spb.com/kuwomojalowezusadalu2pto4.pdf
    • http://goldenframecollision.com/slope_and_similar_triangles_worksheet_answer_key_maneuvering_the_middle68nw2.pdf
    • http://mevukavotidu.getenjoyment.net/82502778946.pdf
    • http://tokudujadi.medianewsonline.com/stock_audit_report_format.pdf
    • http://puxajilesodaxob.22web.org/dupineliwekatavuve.pdf
    • https://static.s123-cdn-static.com/uploads/4475866/normal_5fee9ed81f93b.pdf
    • http://load-bcp.com/jufagaejg3q.pdf
    • http://dajexori.mypressonline.com/11311563684.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6444890e-4f83-40c0-a914-0c8b0069aa4a/situacion_social_del_renacimiento_espaol.pdf
    • http://rabuvof.rf.gd/coreldraw_x6_tutorial.pdf
    • https://uploads.strikinglycdn.com/files/1fa499f3-ed51-498c-8e13-2f9f87c8e5ae/69020888312.pdf
    • http://nexaware.epizy.com/bituva.pdf
    • https://uploads.strikinglycdn.com/files/bb45a2ea-3a2d-404d-9156-71e427bfa1c6/putimitanedixuxogawalipen.pdf
    • https://uploads.strikinglycdn.com/files/cfc344c2-013e-413d-b8e9-f0aaba556067/73320930131.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee6e.bin
20c9baf4c60fb15524689ec40f326eec515803e633b7cb03a0d4cd832bfc4e8a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6E 5504 bytes
font_01_sfnt_off00010113.bin
9c81c81ddd0d512ca51f40c8d0bca63e3ab57521d47f470460b7ccf958728dfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10113 11988 bytes