Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2c20e060b09338…

MALICIOUS

PDF

106.9 KB Created: 2020-11-13 15:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e55f7a0879319cba4e37e66ae6468152 SHA-1: d526a3b89f9f204746f3eea923cbaf4f10704267 SHA-256: bf2c20e060b0933829276edd7a41ddb39ad758e922dc13a494faa706214cb41e
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=bootstrap+form+row+margin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470962/normal_5fa948a20eb18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5f8fedcb12227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f8ef564b560f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426261/normal_5f9ece74359a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f92a0ca75627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_5faa5b8abaa72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_5f9875be34fb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408862/normal_5f975fca4c221.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://uploads.strikinglycdn.com/files/1bcdba38-a71b-4a4d-8207-49aa530c91fb/terminator_dark_fate_1080_putlockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23eff8c8-cf84-4db7-b5c5-fb7119718bfa/gopro_hero_7_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/malaysian_guideline_hypertension.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/hgj_kd_hgl_p.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/4006046338.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FE7 5000 bytes
SHA-256: ae6548fbfd649c3ef80128d5f1c930b044c759e143ae5e4cf3b56e8fe89aeb43
font_01_sfnt_off000150da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150DA 13004 bytes
SHA-256: a3e4259ca3dd6b4e4386079aaa45d0d9f2418da8578af0161e7487cc38f3622f
font_02_sfnt_off00017afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AFC 16144 bytes
SHA-256: f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d
font_03_sfnt_off00018ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FFD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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