Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6714b1908f4d2eb…

MALICIOUS

PDF

71.2 KB Created: 2021-04-05 19:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cef106f18048ef072dd3bafcc04737c8 SHA-1: 241163c8fc84a240dc20843096dc1eef5abcc4a2 SHA-256: d6714b1908f4d2eb6c583cb2b7b8dbf2ee803c7bb572b36a0dd832a1379c7a3a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious nature of this file. Although no scripts were explicitly extracted, the presence of an external URI in a PDF, coupled with high detection scores, suggests it's designed to lead the user to a malicious resource.

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://xezojetit.ru/award?keyword=simple+past+and+present+perfect+exercises+pdf
    • https://zuxadozi.weebly.com/uploads/1/3/4/6/134662888/potebek.pdf
    • http://game-pro.xyz/38830352986qblqk.pdf
    • https://bozalofagolukor.weebly.com/uploads/1/3/0/9/130969011/097d92fe5e36.pdf
    • http://axecheat1.xyz/ximamijuxujinafesuuidch.pdf
    • http://jumbochecker.com/dipotakekejusurkc4g.pdf
    • http://vazolixamitom.22web.org/how_to_prime_a_titan_paint_sprayer.pdf
    • http://tesevamomavuruf.22web.org/walazusidexip.pdf
    • https://doxediseweroz.weebly.com/uploads/1/3/4/6/134634010/wefuvapilowekomigazu.pdf
    • http://sufewonu.iblogger.org/57747923609.pdf
    • http://swiss-family.space/life_cycle_of_anthocerosbk4pr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://filogipopema.epizy.com/high_definition_cinematography.pdf
    • https://s3.amazonaws.com/zarevizebi/python_enumerate_string.pdf
    • http://xizuzaziz.rf.gd/falugizaf.pdf
    • http://bufiwoneven.rf.gd/saxibupokupufo.pdf
    • http://dobisesine.epizy.com/icd_11_release_date_australia.pdf
    • https://s3.amazonaws.com/pusolefosex/buddha_hoga_tera_baap_song_pagalworld.pdf
    • http://najolirox.epizy.com/acorus_calamus_review.pdf
    • https://s3.amazonaws.com/boduxatavepe/how_to_change_the_temperature_on_a_luxpro_thermostat.pdf
    • http://dajidagetulawu.epizy.com/gojapafezafewuz.pdf
    • http://pasigajixivete.epizy.com/border_song_elton_john_lyrics_deutsch.pdf
    • http://rufizugo.epizy.com/10th_maths_public_question_answer_key_2019.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/what_are_the_key_components_of_a_curriculum.pdf
    • http://vuvazapej.rf.gd/ridavubevujagoz.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_off0000da28.bin
2f275a7a30f24e18ef2d133d814197e131aff6a9a270cc829dbbafa54a5f8dac
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA28 5472 bytes
font_01_sfnt_off0000ecaf.bin
f8bcb4bf993d588f4927aa3c528340b812520e1b2b3f3b36cf9e518e84ff70b0
pdf-font-stream PDF embedded font (sfnt) at offset 0xECAF 10068 bytes