Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1fc82281d372611…

MALICIOUS

PDF

159.0 KB Created: 2021-02-20 06:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d196d4da69cec97c6a273468de64fe94 SHA-1: a37a5a6f6d7e3ef0851f03893953b0e0ce7f8c56 SHA-256: a1fc82281d372611fb6a3c62642e2bc727d01eddf6d9d766bc07759065d5d9fc
96 Risk Score

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 0.9990

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://baarspo.ru/strik?utm_term=sony+mini+dv+camcorder+tape+stuck PDF link annotation
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/7286350.pdfIn PDF document text
    • https://nazawerud.weebly.com/uploads/1/3/4/3/134353719/6021115.pdfIn PDF document text
    • https://vobajorod.weebly.com/uploads/1/3/1/4/131438629/pogiligizabapoxetijo.pdfIn PDF document text
    • https://pijusutuwo.weebly.com/uploads/1/3/1/4/131407307/jisasusefagonuru.pdfIn PDF document text
    • https://bolukuja.weebly.com/uploads/1/3/0/7/130739437/tanaja.pdfIn PDF document text
    • https://bimuxafidiw.weebly.com/uploads/1/3/4/7/134701061/tusojurax_sipipuputine.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/sepovutapakogaf/wozovedowebiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/68256685046.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/aggiornamenti_android_samsung_s8.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/global_ice_sheet_growing.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/11920822314.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/31062999124.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/new_butler_basketball_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/44328339559.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/sebakaxebe.pdfIn PDF document text
    • http://ridabus.epizy.com/jexodisela.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_off00021198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21198 5396 bytes
SHA-256: 9667ec609fc82c486ebaae5e2b4fc3cd0bfa95437cb5bbef580363a962d1b522
font_01_sfnt_off000223da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x223DA 11732 bytes
SHA-256: 31ee942e2ba94306653891f516657d5e00a89d70716a66529f97186898bcbc33
font_02_sfnt_off00024ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24BA8 16060 bytes
SHA-256: 5b45d8957cdd618c0f157c507058aef1810e6158bb3d1abf257796d6008f54d1
font_03_sfnt_off0002603d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2603D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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