Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a362e5f06980768…

MALICIOUS

PDF

84.7 KB Created: 2021-04-23 05:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d9f5253f51cbd7baffca1f256802b8c9 SHA-1: db058adbae57556d2d3015a2cea8bf86de4a6ce5 SHA-256: 0a362e5f06980768aadf94e2f842b3068084571f05c07806b84ff569cc30af23
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or scam purposes. The document body, though partially corrupted, contains a title related to dreams about losing teeth, a common theme in social engineering lures.

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://seumenha.ru/strik?utm_term=significado+de+so%25C3%25B1ar+con+que+se+cae+los+dientes PDF link annotation
    • https://cdn.sqhk.co/rewaloxuruvu/4QnCvks/emoji_whatsapp_sticker_maker_apkpure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_602d026005084.pdfIn PDF document text
    • https://cdn.sqhk.co/sixojifez/Z4ijknH/dj_rock_music_ringtone_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415936/normal_6002e7157bc0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375206/normal_5ffdb622e4018.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/if0igcR/29283642949.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5fc8c8ef45771.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403130/normal_602f1a089dede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_602a15ed7cc97.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/57302931048.pdfIn PDF document text
    • http://gusebozaromurel.mypressonline.com/donexasurebiwutuluwofu.pdfIn PDF document text
    • https://cdn.sqhk.co/wepuvumug/gdjjjan/rigojamowipevilepofenover.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_60430422b0331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_601335ca59ce0.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/crown_xti_4002_sell.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_603033588f0e0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1ad250-ac82-4949-a07d-03b19b51c62b/jagubenabogefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2487f29f-1e18-47f5-b227-24a3fbe9bd45/how_to_change_writing_style.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44208dcd-3cf0-4aa0-a3ca-9042cf58a3d5/sp_404_vs_sp_303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d57279-3f52-4208-b498-90c571bcc836/bissell_big_green_machine_parts.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AB 5292 bytes
SHA-256: 301b9b8b6d7bea99f27aa038e69898a725c34a7d449f9ff14bfd1623f6b641ea
font_01_sfnt_off00010bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCB 5632 bytes
SHA-256: 75044931e54fc7e1afd052543725d8f67458d2b626b719c5df0575308c1c5f33
font_02_sfnt_off00011ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBD 11040 bytes
SHA-256: a0b521a8f3211f674b0818b9315945e5d24156aa8f61c612d2e18fc0edd734b6

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