Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca11484fa50e4471…

MALICIOUS

PDF

113.5 KB Created: 2021-03-02 18:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ce3acfd0d25ab674cccb2adb01db0a05 SHA-1: 21b0a835e58636abf1ad28b5b2c22817e4c074e4 SHA-256: ca11484fa50e4471969cba6dc5880046dee3d607d65ecfb783f30c5a06394266
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=to+actually+receive+a+message+a+person+needs+to+do+all+of+the+following+except PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501659/normal_5fd149438b73b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466154/normal_6000e7b97ca62.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/jaji4ih/xefexakeduzijugawed.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/ifVhdgc/81768166123.pdfIn PDF document text
    • http://rafale.store/gta_5_nightclub_warehouse_guideeslof.pdfIn PDF document text
    • http://znalomstvavip.site/how_to_use_bubble_sheet_mask69t5x.pdfIn PDF document text
    • http://2gusevshop.space/nepafebojeladulubuw82h1t.pdfIn PDF document text
    • https://cdn.sqhk.co/zojudaje/wKHNhfJ/english_song_ringtone_mp3_download_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_602415eab7952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5fd89281d1c36.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/kubafezin/xubosupifebufuvekitojogaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/what_does_oll_mean_rubiks_cube.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/german_folk_songs_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/bihar_daroga_previous_question.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/anticancer_a_new_way_of_life.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/gimijugejofitev.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/petevogo.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/27146778407.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/22117810087.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F1C 5840 bytes
SHA-256: 9e6b6b05a17c372132255d90e758e21210975b5cfee059de628001979017b23f
font_01_sfnt_off000192f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192F6 10768 bytes
SHA-256: af9f4fca848207f412e28bd511b1a6819cf4bf59f61863c2421e20b30048d045

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