Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff3d2df8ad14dde…

MALICIOUS

PDF

105.0 KB Created: 2021-03-19 10:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3727774e97ad9dc7b65d3e51f7547728 SHA-1: 18d0ccf92770c498d4b560346cc9023a6db340d6 SHA-256: cff3d2df8ad14ddeb9eacc8e7a52008921a41f836df9d939c63a4135e219c51f
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 0.9991

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://midufefew.ru/strik?utm_term=husqvarna+rz4623+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491927/normal_5ff136191dfd6.pdfIn PDF document text
    • http://probnik1313.tech/bebibaliwedorufhwd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383147/normal_603e2510666d1.pdfIn PDF document text
    • http://nasty666.space/rich_dad_poor_dad_ebook_download_epubavv2i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449965/normal_5febf201cabeb.pdfIn PDF document text
    • https://cdn.sqhk.co/muwitajo/UggYjja/flower_zombie_war_mod_apk_android_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368736/normal_6005ae03cb70d.pdfIn PDF document text
    • http://br1.red/624190823559qy1y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fcbc27c5af57.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/jjd8ieR/wefagegasujelezowozena.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/ohaEEij/xekogejasi.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/ghnUYja/19030803706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459185/normal_5fd679e84b28c.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzewekafan/gfthgeB/16359078753.pdfIn PDF document text
    • http://afracheat8.xyz/jessie_j_singer_2018_domino0po5q.pdfIn PDF document text
    • http://hookup154.site/angry_birds_star_wars_apk_ios6xi9x.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/tiluwisulepam/glue_for_poly_sheeting.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/iferror_vlookup_from_another_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/bhaag_milkha_bhaag_title_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/debt_collection_letters_uk_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/91732634361.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/zimupavewa.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/kurenurunadakevoselezes.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14774 5516 bytes
SHA-256: 3557bfd99abe842a2b96d3a7d9db14a7788093c842f5e3ce4d1dd0173059260d
font_01_sfnt_off00015a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A55 10924 bytes
SHA-256: 162e5bf8c2d152836fd9c681a7419d2565becf7aba33505adc79ad2b9aadef6b
font_02_sfnt_off00017fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FA9 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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