Malicious PDF — malware analysis report

Static analysis result for SHA-256 924760c3ef7847f9…

MALICIOUS

PDF

72.9 KB Created: 2021-01-24 01:47:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 53bee9ac00b58f591e907a5b4e1d04cb SHA-1: 690eca59d1622bf1c483f6500406b79512732399 SHA-256: 924760c3ef7847f9dd4e790564e34bf664ebb92c8424f4a284784c8944c5a59b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL suggests a phishing or social engineering lure, likely to trick the user into downloading a further malicious payload. No scripts were extracted, but the presence of external URIs and the overall detection profile points to a phishing campaign.

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://druttle.ru/aws?utm_term=crazy+frog+theme+sheet+music PDF link annotation
    • https://cdn.sqhk.co/tororukiwuri/phihgaS/agent_orange_strain_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450724/normal_6003171292aef.pdfIn PDF document text
    • https://site-1168308.mozfiles.com/files/1168308/61911929756.pdfIn PDF document text
    • https://site-1178114.mozfiles.com/files/1178114/reading_comprehension_test_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_6001cdf4c786f.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/EjgiamF/swift_dzire_suspension_bush_price.pdfIn PDF document text
    • https://site-1260147.mozfiles.com/files/1260147/ailerons_bold_font_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/ggLhgjh/33187369341.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/hfjjhgF/leloro.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/fABifrX/pebero.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/bendix_brake_catalogue.pdfIn PDF document text
    • https://site-1168233.mozfiles.com/files/1168233/47424713537.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/ehcIuAs/50172560907.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/donake/corrugated_iron_sheet_making_machine_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/mojal.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/566643972.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/cf_auto_root_sm-_j100h.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/dalvik_emulator_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/sevuluxezisife.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/browser_video_er_extension.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE066 5320 bytes
SHA-256: 21fa2f65b151836b57b60c46d0ea4094f5f0fa932b27ae75e36b50897b402975
font_01_sfnt_off0000f267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF267 10412 bytes
SHA-256: fb778ddcead7620d15224e54ef16b317e4bed6a791318a553732f0de656a1049

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