Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e07e1a324cffc9…

MALICIOUS

PDF

70.3 KB Created: 2021-03-15 08:33:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47876c38fc37c3a2d96d30c6bb923adc SHA-1: 1aa532b6527f39725b0f6eb4b48b081655bd341c SHA-256: b8e07e1a324cffc932244305b164df349bcd51bf0ea10e25635cc7158a3eb273
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://bologen.ru/wix?keyword=pase+v+hannon+prezi', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to presentations or documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=pase+v+hannon+prezi
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5fe87ba73c089.pdf
    • https://cdn-cms.f-static.net/uploads/4383321/normal_6026cebfcc26a.pdf
    • https://xogevowizixid.weebly.com/uploads/1/3/0/9/130969953/kukeduwilejut.pdf
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5feaee6d8c92e.pdf
    • https://sisezapude.weebly.com/uploads/1/3/1/3/131398367/wajitenek_kufikojisozof_jujokig_kovidarak.pdf
    • https://tasimaxexakopox.weebly.com/uploads/1/3/2/6/132681882/4756528.pdf
    • http://riniwovefaraw.22web.org/fobotakikiji.pdf
    • http://lonagonem.22web.org/native_american_buffalo_facts.pdf
    • http://papakofowomida.22web.org/41337430013.pdf
    • http://dorisebadun.22web.org/que_es_el_bosquejo_de_la_grafica_dela_funcion_cuadratica.pdf
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5fce193819043.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bovinow.epizy.com/handmade_gift_tags_template.pdf
    • http://sipujajawe.epizy.com/oriflame_beauty_app_free.pdf
    • http://xejojud.epizy.com/how_to_write_an_introduction_paragraph_examples.pdf
    • http://xukaneteris.epizy.com/english_alphabet_writing_guide.pdf
    • http://dozonixenot.epizy.com/what_are_the_different_drywall_finishes.pdf
    • http://riboparewi.rf.gd/nonibakimatigebizifajoda.pdf
    • http://zajeleji.rf.gd/34636037562.pdf
    • http://kavafaj.rf.gd/8276780080.pdf
    • http://nurupejizijij.rf.gd/how_to_reset_kenmore_400_washer.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_off0000d711.bin
f67cd36611d5ce7f25427dc2b8edbfdaa3c2d2729d78e710108ef5370ea2dece
pdf-font-stream PDF embedded font (sfnt) at offset 0xD711 4984 bytes
font_01_sfnt_off0000e80d.bin
d1ac10716a918caf93ac385c93043ae59d9d87f7248b2d91e0059f856cc0abd1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE80D 10236 bytes