Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff9ba7565c93db78…

MALICIOUS

PDF

83.9 KB Created: 2021-04-30 00:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d092a92c5e1ddf17f4adb1ad7ad73f3 SHA-1: f10a586c0b0c91fe366b55ce090ab6ecf4222929 SHA-256: ff9ba7565c93db78b2305e67dfe832c2f06229d2ffc469f5bf90b8f2a027d909
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain keywords related to prayer, suggesting a social engineering lure. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/strik?utm_term=intercessory+prayer+bible+verses
    • https://cdn-cms.f-static.net/uploads/4473890/normal_6056f62f610e1.pdf
    • http://dodunagosukew.iblogger.org/canon_70d_exposure_compensation_in_manual_mode.pdf
    • https://cdn.sqhk.co/papebikuwi/ZhgTujb/karowuvububejapofoto.pdf
    • https://cdn-cms.f-static.net/uploads/4368265/normal_5fe9988c20d13.pdf
    • http://zugawumaz.22web.org/sojazoxule.pdf
    • http://votixibutiro.medianewsonline.com/april_2020_romance_books.pdf
    • https://cdn.sqhk.co/rubupidorinu/aUSYCgc/rosoweripilu.pdf
    • http://ludesajezopaju.medianewsonline.com/accounting_information_system_james_hall_test_bank.pdf
    • http://ronifibofizet.medianewsonline.com/vlsi_design_techniques_for_analog_and_digital_circuits.pdf
    • https://cdn.sqhk.co/zujarepifej/i5ihgjf/15210593109.pdf
    • https://cdn.sqhk.co/vorebilifi/mciaMPl/vector_22_crb.pdf
    • https://cdn.sqhk.co/setupemup/ic60Ijd/fokapud.pdf
    • https://cdn-cms.f-static.net/uploads/4453730/normal_5fdb530468520.pdf
    • https://cdn.sqhk.co/buzunonoj/ejc6eib/98948310752.pdf
    • http://vejofewi.iblogger.org/past_simple_vs_past_continuous_text_exercises.pdf
    • https://static.s123-cdn-static.com/uploads/4377912/normal_5feea84132b0c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kunegozaribop.epizy.com/11031289693.pdf
    • http://muweluboxakok.rf.gd/icici_cheque_deposit_form.pdf
    • http://joboberunora.rf.gd/93774174139.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_off00010ae6.bin
385458b036aaeba9cacc722dd2964915b8e08f71076a6db428d9e52d1d560609
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE6 5164 bytes
font_01_sfnt_off00011c90.bin
d5114d4324baaeb72c8c6ef0b0dc2f1d13e554bd62ca6eaf0031b7232e71e103
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C90 11136 bytes