Malicious PDF — malware analysis report

Static analysis result for SHA-256 592f20f129a90063…

MALICIOUS

PDF

77.2 KB Created: 2021-04-01 18:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78cb13513fa51fa2d230729c6956bcda SHA-1: a781c6aff3a18fa97ec6c6643f915cc3e60c4917 SHA-256: 592f20f129a90063d5f55ac6df4a8407a1a3e6eae79b393d3ed21224e2c324cc
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded URI pointing to 'https://resalured.ru/aws?utm_term=the+5th+wave+book+setting', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the ML classifier's high confidence suggest malicious intent, likely related to social engineering to redirect the user to the malicious URL.

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://resalured.ru/aws?utm_term=the+5th+wave+book+setting
    • https://cdn-cms.f-static.net/uploads/4482407/normal_605c688f6e4e1.pdf
    • https://cdn-cms.f-static.net/uploads/4421782/normal_604ee5794bdc0.pdf
    • http://ketoxitigojaluk.sportsontheweb.net/bergeys_manual_reference.pdf
    • https://cdn-cms.f-static.net/uploads/4487381/normal_6011de4ae3374.pdf
    • http://jubokoz.22web.org/calling_card_call_of_duty_cold_war.pdf
    • http://nanamojuvimujo.medianewsonline.com/mivuzu.pdf
    • http://jolidulikan.scienceontheweb.net/grateful_elevation_worship_chords.pdf
    • http://naturelofo.mypressonline.com/naming_functional_groups_practice.pdf
    • https://cdn-cms.f-static.net/uploads/4410730/normal_6021c01b454c8.pdf
    • https://cdn-cms.f-static.net/uploads/4413225/normal_6036e0b0bda41.pdf
    • http://mejumafegebameg.mygamesonline.org/flipped_book_file_download.pdf
    • https://cdn-cms.f-static.net/uploads/4475208/normal_6059859fe19fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/meludav/nakuwumobu.pdf
    • https://s3.amazonaws.com/gofilafixu/rodefewevedavuxunijepub.pdf
    • http://wuxanewelupeluv.epizy.com/atividades_para_educao_infantil_3_anos.pdf
    • http://xarilupinedup.myartsonline.com/function_of_bile_juice.pdf
    • https://s3.amazonaws.com/zifilobesumafi/zulobujozowugitukivudagof.pdf
    • https://s3.amazonaws.com/gisujubolidine/magic_chef_dishwasher_old_model.pdf
    • http://butokerisutu.epizy.com/global_writing_for_public_relations.pdf
    • https://s3.amazonaws.com/gagagakigibapo/sanam_music_band_songs_mp3_download.pdf
    • http://luvavikomuleri.rf.gd/24687331693.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_off0000ee9e.bin
5930bf591b9306cf02f2f4ef0f0ba5b3fd655c6ba47a733cb002fb5a3ea65de2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9E 5248 bytes
font_01_sfnt_off0001009a.bin
e4da70cc514d04809fbc773998729115411795c6d217147fff4e6bf8c8ab4a19
pdf-font-stream PDF embedded font (sfnt) at offset 0x1009A 10976 bytes