Malicious PDF — malware analysis report

Static analysis result for SHA-256 66674bc59b1f9f5d…

MALICIOUS

PDF

68.2 KB Created: 2021-03-29 00:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2d055575e85a9d0f8dc085366d3ab25 SHA-1: 7c46ee216beea4e55fb334e50f2ff6124ad8e2d4 SHA-256: 66674bc59b1f9f5d7d58bdab675077e3ed6362c9ffc7be80c4fa57faa189d505
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site disguised as a judiciary portal. No scripts were extracted, but the presence of external URIs and the phishing classification suggest an attempt to trick the user into visiting a compromised or malicious web resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=ri+judiciary+attorney+portal
    • http://bizefobudiso.22web.org/is_digi_003_compatible_with_pro_tools_12.pdf
    • http://yatvoyya.fun/5116270154361hx7.pdf
    • https://wiperuzikenod.weebly.com/uploads/1/3/4/6/134694852/8994829.pdf
    • https://cdn-cms.f-static.net/uploads/4383322/normal_6012fc6a511e7.pdf
    • https://gatakuluva.weebly.com/uploads/1/3/1/8/131856326/gipojuj.pdf
    • http://reduslim-italiaofficial.site/64428604500ibutd.pdf
    • http://vilopeg.xyz/design_sprint_2._0hu070.pdf
    • https://cdn-cms.f-static.net/uploads/4387226/normal_5fd1cfb2135cf.pdf
    • https://jasugigikimodo.weebly.com/uploads/1/3/1/3/131383258/c9da2ac.pdf
    • http://kukikifo.iblogger.org/sagikenojakufupapiwexex.pdf
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/2763114.pdf
    • https://zoxuxidez.weebly.com/uploads/1/3/0/7/130775284/f31c17898c.pdf
    • https://static.s123-cdn-static.com/uploads/4443588/normal_5feb204d39f70.pdf
    • http://nesobaka3.xyz/renaxudubavidibbyeh4.pdf
    • https://static.s123-cdn-static.com/uploads/4470828/normal_5fce6916c0219.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jezanijumoz.epizy.com/jejiwe.pdf
    • http://vugikalijuboxo.epizy.com/define_agrarian_reform.pdf
    • http://dupivet.epizy.com/the_mandalorian_episode_recap.pdf
    • http://wafidifu.rf.gd/salud_publica_definicion_segun_la_oms.pdf
    • https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_e76f2e00f9e6441fa39b7bf992c710ea.pdf?index=true
    • http://nodefojabotozij.rf.gd/58637960632.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_off0000ce40.bin
df063569bd8f54fcd6ee3ea3ccb498becdfef065ac991514d225329a434a9140
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE40 5076 bytes
font_01_sfnt_off0000dfa2.bin
356bb6557007913144b128c955e03db9c1595899c6472f9a8d1260aebc1b90b6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA2 10520 bytes