Malicious PDF — malware analysis report

Static analysis result for SHA-256 f416d9b2892277de…

MALICIOUS

PDF

79.3 KB Created: 2021-05-25 10:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9b1b4cfc83f76cd8b4cf5f97250864d SHA-1: d1640fccec45694b9e9c794436e4ee1481c437c1 SHA-256: f416d9b2892277de8a389b1cdf47f87e2268d8c1dc339d1897516d8abfbec073
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, potentially leveraging social engineering by referencing 'Bill Gates 11 rules of life'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/strik?utm_term=bill+gates+11+rules+of+life+pdf
    • https://cdn-cms.f-static.net/uploads/4475216/normal_5fd1ac3c48b53.pdf
    • https://static.s123-cdn-static.com/uploads/4450354/normal_5feeb5969b993.pdf
    • https://dunopupusegujuz.weebly.com/uploads/1/3/4/3/134348927/6649103.pdf
    • https://ligezuwokatajef.weebly.com/uploads/1/3/1/6/131606313/fezabekujetex_rixetifizedepop_nibagu_gumomilibetuk.pdf
    • https://cdn-cms.f-static.net/uploads/4426547/normal_6032fe4f188ad.pdf
    • https://dalujukonuxuda.weebly.com/uploads/1/3/1/1/131163933/xopesi_sarodubaxab.pdf
    • https://jisiresofuwidi.weebly.com/uploads/1/3/0/7/130739297/wotedi-tafikob-kudegubenawofu-fateva.pdf
    • https://cdn-cms.f-static.net/uploads/4368736/normal_6012275517d38.pdf
    • https://cdn-cms.f-static.net/uploads/4456728/normal_603249c1856a9.pdf
    • https://meligobuv.weebly.com/uploads/1/3/1/0/131070858/9530c227a86b0.pdf
    • https://bididanigatozum.weebly.com/uploads/1/3/4/3/134314142/f14cf7.pdf
    • https://static.s123-cdn-static.com/uploads/4420915/normal_5fce32116a7ae.pdf
    • https://fixajunize.weebly.com/uploads/1/3/6/0/136051507/2229036.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nelizenejakarug/rujofikaroximudume.pdf
    • https://uploads.strikinglycdn.com/files/3680b3d1-2d74-47f7-8c50-fb37b832be88/famuz.pdf
    • https://uploads.strikinglycdn.com/files/68cd4537-1525-4c50-9e43-b6a3ff3676e2/online_to_word_converter_software_free_download_for_windows_8.pdf
    • https://uploads.strikinglycdn.com/files/a0fed8a1-e409-47ec-8319-3d226a8f7d11/ionic_bonding_electron_dot_diagram_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/8a8d06fa-f4b5-47ba-b956-b6af40ef3764/povonegipisugusixomejovov.pdf
    • https://s3.amazonaws.com/kimone/how_much_does_epic_cost_for_private_practice.pdf
    • https://s3.amazonaws.com/tupofelasujewas/44688087360.pdf
    • https://s3.amazonaws.com/sajatesawodiji/supedoketemelok.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_off0000f70c.bin
86f278f6f0a04806bec4343a50997f3e4e46131a829b5707f07401accde414b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF70C 5308 bytes
font_01_sfnt_off00010933.bin
838c9fcae3e3e18bdec1e9fb255189a5c89f48493b026770df2d60d399ce5a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10933 10776 bytes

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