Malicious PDF — malware analysis report

Static analysis result for SHA-256 7165e47ca7478add…

MALICIOUS

PDF

81.1 KB Created: 2021-03-23 06:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0cfc578ba005401b4b834035d8c6f0f SHA-1: aef1f6ddd1264fdbb985606d50f91f99bf06afdf SHA-256: 7165e47ca7478add6b80d86e5aec62ea11e046c85cefd76ac16e03176bb04cb3
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'resalured.ru' suggests a phishing or credential harvesting attempt, disguised as a tax book. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=ca+ipcc+income+tax+book+pdf
    • https://lowezikalazana.weebly.com/uploads/1/3/0/9/130969016/3caee2.pdf
    • http://bitalotava.scienceontheweb.net/can_you_have_multiple_spouses_at_the_same_time.pdf
    • https://fuxarudoniw.weebly.com/uploads/1/3/5/3/135350341/xugamefitu_rofidilobe_xonizimurelut.pdf
    • http://verifiedbadge-lnstagram.com/giwinovejozadewosigebuu964t.pdf
    • http://milky-rp.space/11912243615347b1.pdf
    • https://static.s123-cdn-static.com/uploads/4500432/normal_5fdff43fc6635.pdf
    • http://vvd.bar/8569334236040kyl.pdf
    • http://latutuvifem.22web.org/do_you_have_to_show_id_to_police_in_nc.pdf
    • https://cdn-cms.f-static.net/uploads/4383678/normal_601b13b2b1767.pdf
    • http://zinefikitozozeg.sportsontheweb.net/knight_mathematical_statistics.pdf
    • http://tosefabebiribow.scienceontheweb.net/why_does_my_echo_chainsaw_leak_bar_oil.pdf
    • https://japilulijerimu.weebly.com/uploads/1/3/0/7/130738614/4459832.pdf
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5fe52c6660064.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zokugapifixi.rf.gd/gixixabomokuwalo.pdf
    • http://lupixopuvir.onlinewebshop.net/abdul_kalam_biography_in_hindi_language.pdf
    • http://doveweluzabakiw.rf.gd/47192189236.pdf
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_778f46391c8e4522a756a8930e71793e.pdf?index=true
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_f2133c9272904b69a9afd118dcaa223b.pdf?index=true
    • http://taberadajip.atwebpages.com/23197963119.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_off0000ff41.bin
77e4513bcd4518bb4fb547ee825d53a77ee43758f9cf286242c6b657934b955f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF41 5172 bytes
font_01_sfnt_off000110ca.bin
c3f5abd2c8278cffbbc50734e63d34df0012975e6499b977d00968e643f080bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x110CA 11256 bytes