Malicious PDF — malware analysis report

Static analysis result for SHA-256 086af386bdf9c990…

MALICIOUS

PDF

72.4 KB Created: 2021-04-05 10:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c531f2060b040dcdd1564d4e54da517c SHA-1: 22c8997000be4523d13582a6bdded4f41c10cc12 SHA-256: 086af386bdf9c990d02d6417f652ed9fbaf686bf616bf21dcdd307df6873e67b
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download page. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to exploit users through social engineering, masquerading as a benign document to facilitate malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/123?utm_term=joyeux+anniversaire+songs+free
    • https://static.s123-cdn-static.com/uploads/4487665/normal_5ff07e5daf129.pdf
    • https://winojarenegesut.weebly.com/uploads/1/3/4/4/134481716/likupi_sajoba.pdf
    • https://pikupazu.weebly.com/uploads/1/3/4/5/134577858/af6821366.pdf
    • http://fashion-deals.xyz/fubajijepagofagurowx3h.pdf
    • https://cdn-cms.f-static.net/uploads/4490542/normal_60659ed73855a.pdf
    • https://tusatetop.weebly.com/uploads/1/3/1/4/131408029/wodidobumujerig-koxalapekegeg-vetozezovuketul.pdf
    • https://cdn-cms.f-static.net/uploads/4452373/normal_604206f83862c.pdf
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/fiwuxepij_fosupira.pdf
    • http://dominis.xyz/poemas_en_lengua_indigena_para_nioszsece.pdf
    • https://cdn-cms.f-static.net/uploads/4402261/normal_602448387de2b.pdf
    • http://pasetbs.xyz/brochure_template_powerpointyss6k.pdf
    • http://nekretnine.site/smash_ballot_20209t631.pdf
    • http://bowaveridageg.iblogger.org/gapukonizubewovofelukad.pdf
    • https://cdn-cms.f-static.net/uploads/4478685/normal_5fdbd861462de.pdf
    • https://cdn-cms.f-static.net/uploads/4417827/normal_601ffd908f613.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/bd41dbbd-e7cc-47bb-9b9a-2cc9c9a7d8ce/irregular_verbs_spanish_present_subjunctive.pdf
    • https://uploads.strikinglycdn.com/files/760094f1-1264-4f6c-9f99-79d71035d046/42071755254.pdf
    • http://ponowuvibux.epizy.com/difference_between_abstract_and_concrete_class_in_c.pdf
    • http://serobamemesazan.rf.gd/bunny_live_mod_terbaru.pdf
    • https://uploads.strikinglycdn.com/files/92f14d1d-7bd7-4d27-a77f-a4b6d4faa745/how_do_you_reset_a_ge_profile_washer.pdf
    • http://letozin.rf.gd/manuwunidufo.pdf
    • https://uploads.strikinglycdn.com/files/a7e63745-642a-44fe-98ff-c864de0931e8/vawesaludufukonojurupizu.pdf
    • http://jefelaxe.epizy.com/fokusurarisizul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc69.bin
0540adbc7b29c07601ab77f9b18a2491d0159bb9ce99cbcbf24c6d13337c4e72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC69 4924 bytes
font_01_sfnt_off0000dd47.bin
6dbfc4989602d3fa4f769075a5c41aabaf1938c94d77bfc56347838bddea2822		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD47 12296 bytes
font_02_sfnt_off0001056c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 4324 bytes

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