Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ab5488e0e17867…

MALICIOUS

PDF

106.6 KB Created: 2021-02-11 10:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5f8f2d7066fa4e5acf7c1c424e961cff SHA-1: c4a9201ab20cb9cd2f8705a3e94579fb84180983 SHA-256: c6ab5488e0e17867d16b499d6d7fe149c5644778a2fd08c550417258913185b0
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/aws?utm_term=chemistry+lab+report+example+pdf PDF link annotation
    • http://tifunadepepix.22web.org/pdf_to_word_free_nitro.pdfIn PDF document text
    • http://fesuzeroba.iblogger.org/newimotozaluz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377928/normal_5ffb7a806f6ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386593/normal_601199b96d50f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5fd90da1e562f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_602052a412490.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464734/normal_6022708a5b3d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405904/normal_5fc6da278a0d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423145/normal_6024bf4f2be33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463812/normal_600bc74d10978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_5fe9564e93e4f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josetevuj.epizy.com/67921649321.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/antiformiche_naturale_per_piante.pdfIn PDF document text
    • http://mokimonanogi.rf.gd/86875142252.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/bully_mod_apk_data_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/ic_cd4050_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/doxupurutoziragurede.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/insert_multiple_sheets_in_excel_vba.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_off00014b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B64 5496 bytes
SHA-256: cf0406826dac34ca543766efc33800bd30f40505ae28325d5f69d386901cac55
font_01_sfnt_off00015dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DEA 12072 bytes
SHA-256: 4407c251885ba777ab48a8bb56d2c6446f1da60e21b8cb311be6587910c32624
font_02_sfnt_off00018757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18757 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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