Malicious PDF — malware analysis report

Static analysis result for SHA-256 de8ecfa96007e555…

MALICIOUS

PDF

80.9 KB Created: 2021-02-21 21:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a9b9ccf9701d8cb0a9ad2d441444031f SHA-1: 3124cd26eace1b7eeb19850195bdccb1001e6218 SHA-256: de8ecfa96007e5553afd2544ad33635f37f38d40c70782f9a09cafd63c06ca92
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://druttle.ru/aws?utm_term=what+is+a+straw+man+process PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5fe964fac64c0.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/CifFVhd/93132237415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489412/normal_5fe98dde5e3ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402717/normal_600e5b294dc8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5ff1cbeb4cb5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_601252ac5ec4e.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/UjbidQy/kogixaseva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465249/normal_5feec08e8dda5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5fe0f265cd754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443576/normal_5ff4bc5354811.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5febad2b277c2.pdfIn PDF document text
    • http://lolibixavug.22web.org/80535520011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501233/normal_5ff30f840d01e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jujovotusenugo.epizy.com/travelport_galileo_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/runaxofexarelilo.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/32173523919.pdfIn PDF document text
    • http://dozafuzap.epizy.com/57526332416.pdfIn PDF document text
    • http://turagax.rf.gd/the_summoning_movie.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_off000100e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E8 5248 bytes
SHA-256: 56403d68383165612feb4756f0275381f4ea358cd4fe5ea60947faece14201df
font_01_sfnt_off000112ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AB 10520 bytes
SHA-256: e74968b5ab60a0a521307237f46dbb086de6c9941516ca290e63608e1990f1af

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