Malicious PDF — malware analysis report

Static analysis result for SHA-256 496ecc6b281a0de3…

MALICIOUS

PDF

75.9 KB Created: 2021-03-18 11:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91b87e7bfd961caebd70133c161eb40c SHA-1: 9be4472be01766705680c7f869cd0de830d1186e SHA-256: 496ecc6b281a0de3463e8bb98c9aa4d8604a33d5ae0914c11eb44180d87174e8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading a PDF, likely containing a malicious payload. The document body, though heavily obfuscated, contains keywords related to the URI, suggesting a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/wix?keyword=britax+b+safe+ultra+manual
    • https://cdn.sqhk.co/godidudawat/ihj4Gig/18445041496.pdf
    • https://static.s123-cdn-static.com/uploads/4482418/normal_5fedfb505d8d7.pdf
    • http://jijuduli.mywebcommunity.org/what_is_a_good_portrait_lens_for_nikon.pdf
    • https://cdn-cms.f-static.net/uploads/4415544/normal_604a272d94710.pdf
    • https://cdn.sqhk.co/zimopiroxab/jjjjbhg/mi_themes_app_free.pdf
    • https://cdn-cms.f-static.net/uploads/4448540/normal_604203c2a7a6d.pdf
    • https://cdn.sqhk.co/dawadetugas/LijhhjW/video_looper_raspberry_pi.pdf
    • https://cdn-cms.f-static.net/uploads/4416305/normal_603e8916cf589.pdf
    • http://gepokupaburorew.mywebcommunity.org/arranged_marrying_a_stranger.pdf
    • https://cdn-cms.f-static.net/uploads/4379489/normal_60150ad6abeeb.pdf
    • https://cdn.sqhk.co/dajusonas/hjEgigR/get_free_shipping_on_everything.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8cd6b638-6e2b-4c12-a952-e1993734ab49/the_hobbit_unexpected_journey_full_movie_free_download.pdf
    • http://padusij.onlinewebshop.net/tomegazofe.pdf
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_8bd91f83dc0849bc9037073c9cfc7d5a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4f3aebc9-0612-41b8-af71-a9b47c22876c/don_juan_tenorio_resumen_del_libro.pdf
    • https://uploads.strikinglycdn.com/files/b1d3aebe-083e-41fc-b3a3-59fc30022271/74875116875.pdf
    • http://kubomefewofumim.atwebpages.com/20421113031.pdf
    • http://suxudogakol.myartsonline.com/fenasixevuvu.pdf
    • https://5e446c31-fcb6-4427-a178-91ee45bbff8b.filesusr.com/ugd/4e76b8_a917188c1ae745eba6c6472188299b55.pdf?index=true
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_0ff18992680c4c60a82bef1407a79838.pdf?index=true
    • http://zisukuvi.atwebpages.com/oster_1200w_kitchen_pro_blender_with_cups.pdf
    • https://uploads.strikinglycdn.com/files/be1eb1f6-8bc8-4b8f-98c6-2fd1abc3cb4b/lugijezonupipa.pdf
    • https://uploads.strikinglycdn.com/files/8b51a6dd-d6a2-4ff8-a9c1-8a4c4efb2d8b/mexunogogufofeta.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_off0000ee29.bin
2cc6aa6beb6779e934327ec5c24527f9d5180d6df0dc6bdc306a5e8bed6a01f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 5172 bytes
font_01_sfnt_off0000ffae.bin
f2884432304902e5452915d117b0dc717868370f51d4dfa16241aaf959952d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAE 10188 bytes

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