Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50834475dfc68f3…

MALICIOUS

PDF

74.4 KB Created: 2020-11-23 22:30:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e39d391ffbe556065b3bb90302c3c9e SHA-1: 085989ea44718695010e7f5d25cb2c12c586d1c1 SHA-256: d50834475dfc68f338006db30ce75cab46fc8490b65b8b4a661faccec1ed08e3
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 0.9998

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/strik?utm_term=angularjs+up+and+running+pdf PDF link annotation
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/gakofapogafi_riwav.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/3977069.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zamuriza/diablo_3_demon_hunter_build_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690e26fe-8e92-40fb-a66d-a718e1711b8e/18010821911.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/calendario_escolar_cordoba_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1ad239-fa40-4608-a164-f7eadf5c1c36/fitbit_alta_hr_instructions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/masterpiece_theater_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/zejumumesuziwakulovug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c17260-517a-4ce2-ac71-5a1684b3e45c/rosawimix.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/political_cartoon_practice_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5236cee2-1c1f-492b-bbd5-4f534b8f4af6/wubokiwuvirulubusinire.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/15765367591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2b6ed30-1cf4-4627-9549-a7eec268352a/choice_specs_location_pokemon_sword.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B4 5272 bytes
SHA-256: 700e306eb383a9b23bc5f3818b7ac4ed9d40b41a66e4893244fa44021a49761a
font_01_sfnt_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 14032 bytes
SHA-256: c14e5ce9adde02ef5cb23d17fea62b617d562a995880dc1714501dc1e7188dda
font_02_sfnt_off000107ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 16060 bytes
SHA-256: 1018660efa6a1a00280f0dbd6ee9814149b2344b9acf14d98de2cb76d1e712aa

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