Malicious PDF — malware analysis report

Static analysis result for SHA-256 664cfcc1dc1c0659…

MALICIOUS

PDF

77.6 KB Created: 2021-02-20 17:14:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ee66c2389ae4de13f9ec71012a0ec79d SHA-1: b60a7249889bcf733662bde5bd9c353b5e4fcaa7 SHA-256: 664cfcc1dc1c0659db0ed17c5517cabf854d52b63047c0d2eae1c0fb8d11a72f
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://bologen.ru/aws?utm_term=are+evap+lines+on+pregnancy+tests+real PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5ff53225ba6fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420224/normal_5ff9858983ab6.pdfIn PDF document text
    • http://trend-sales.fun/zotaxowijepuvox4n8wy.pdfIn PDF document text
    • http://inter-kalinka.ru/android_mobiles_below_10000_rupeeszcn03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365608/normal_6003a89abceee.pdfIn PDF document text
    • http://sirovikokaxi.22web.org/magazine_cover_template_ppt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380223/normal_5ff27ec964f06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_6028fe3963d90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366010/normal_5feefaf5513cc.pdfIn PDF document text
    • http://specialsale.info/relelakedumatowifnn038.pdfIn PDF document text
    • http://shopsmmv.site/magic_jar_guide_5e60n5x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sexikiti.epizy.com/bhojpuri_bhakti_ringtone_pawan_singh.pdfIn PDF document text
    • http://tugefewose.rf.gd/nuduxadivu.pdfIn PDF document text
    • http://logupenevetisi.epizy.com/dupepuzimupi.pdfIn PDF document text
    • http://dujizadixupodur.epizy.com/21453161083.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/xogifexerusofubimop.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/xidegosumadel.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/nuwiwefemopovezaxajazoz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE543 5040 bytes
SHA-256: 6c3eca5dc9a3d788478f118f2b0cadd04c31b66590e600dc448886498d809dea
font_01_sfnt_off0000f67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67D 10824 bytes
SHA-256: 312a45ff738714a1fafbeb941d6b3b3466322898d8fe12b58e5110ec4bc4fe9a
font_02_sfnt_off00011b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B47 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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