Malicious PDF — malware analysis report

Static analysis result for SHA-256 66256e4e48132043…

MALICIOUS

PDF

84.4 KB Created: 2020-11-20 02:29:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9e0b21b1eb89a7d138fdf31d17da6d2f SHA-1: d70b25e040d6ca5c475677368208efd3be4ff3e2 SHA-256: 66256e4e481320434efbcbd8bd3e78f398f8cdecc228eab6ef24685681dd0d12
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=botany+lab+manual+class+12+pdf+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411479/normal_5f9514d46f6fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f9a7ff5c8db7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_5f9aeddd23dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5f9e3eae72ff6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f9913cec40fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446280/normal_5faf29ffbb836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403283/normal_5fa49308af4c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f91a5108711e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393759/normal_5f9191c4b16aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/20103177636.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/deleti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540e2830-afe5-4caf-892a-e900fd927b4b/table_rock_lake_fishing_report_may_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/monke_onke_ffxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ebc7be9-3255-456b-9447-b2a709816bb2/35227988942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d57f891-a15c-410e-8973-c2cb2a1aa925/jazumuxozogisifuvutunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a969e39c-ffa6-4fee-abed-7259dad832a2/age_of_empires_full_game_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC71 5608 bytes
SHA-256: 576b828617f57da8d90d5684280e961d5e25cd95d5266cab38fb2d418c833abc
font_01_sfnt_off0000df77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF77 7536 bytes
SHA-256: 4197522ca16eaf86767828114e8715a35dcc2fa599e83d4cc7b3785d85c682e5
font_02_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 11552 bytes
SHA-256: 4b647301f3c0e2a8169878e9b2cf60e3fc60544fb38fcd43ca6cd51498c5af8d
font_03_sfnt_off00011c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C60 17492 bytes
SHA-256: c1e6ffc75750c5739b28184ea098192487e1c360ff13057a509a4a6bbbe05e79
font_04_sfnt_off000135b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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