Malicious PDF — malware analysis report

Static analysis result for SHA-256 2852237e647237b9…

MALICIOUS

PDF

66.8 KB Created: 2021-02-22 09:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1d4db99dee78ed5760839db65e120d10 SHA-1: 5c5a25683b5b3f633821eb044050eefead7aa2d5 SHA-256: 2852237e647237b9c59c162af375806359fd56232e267fcee3c1435b770c7bfd
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 0.9997

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://jottigo.ru/wix?keyword=rename+apk+name PDF link annotation
    • http://alfa-quest.ru/98879618359z6b67.pdfIn PDF document text
    • https://cdn.sqhk.co/vimanagadu/tZvcggz/stachys_coccinea_seeds.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/cRifzib/98204469099.pdfIn PDF document text
    • http://nukels.xyz/47615451530x2jfh.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/ijcjaij/shadow_fight_2_special_edition_mod_apk_mody.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/a3jbjbT/71584547289.pdfIn PDF document text
    • http://storeeu.info/toradol_davis_drug_guideczwmh.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/wAic6ji/narcos_cartel_wars_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fe408c543fd3.pdfIn PDF document text
    • http://antinomi.design/kigewefikanilejamareq9za1.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/zemunomipazikez/esr_spectroscopy_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/39362616500.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/life_lessons_from_the_book_of_job.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_off0000cb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB69 4732 bytes
SHA-256: 50ed8e5033907268486125df47cce0790053aac19a678b6cdb46bcced94363cc
font_01_sfnt_off0000db79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB79 10428 bytes
SHA-256: 2d2ae60bdf63b3607b141ee9cf80b3663b342f44d777b680bfdd1981e82dd067

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