Malicious PDF — malware analysis report

Static analysis result for SHA-256 17790c01df3c436b…

MALICIOUS

PDF

66.9 KB Created: 2020-12-05 07:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7ba7049f8977e259d3e6ba1009ad7e6b SHA-1: 5a5e3ca40214d072940d83fc23233f4b6a4d9ec5 SHA-256: 17790c01df3c436bf8e2fd0c5864efadde6a1133678d34b5febde1a0c835b53c
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=the+new+earth+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5fbee4c50d6e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2b0d2239b0722913ccfbe/t/5fc3bcd99b1ed035384f351b/1606663393301/28349204862.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58302c6d9645836414f06/t/5fc6f59fbfb90028be44844b/1606874528264/siwekosekadiwewidesoke.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/xafasaliwedobodixewe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c5d3a3bf4b14abaf5581/t/5fc7bc30bfb90028be5ce42e/1606925370691/ladybug_adventurer_award.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe093d2dd96f5918b560b8/1606289726042/gutodavomalifetasaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1e09fbdb33045eec91c30/t/5fc5123961e25426e1d87104/1606750777761/sejisekipiwudesovabum.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/adithya_tv_dubsmash_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c52ccc91-66d5-4db7-93f1-7ecc8214d5e5/rufigonogu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a1fc2cf09257bd77158e/t/5fc522589b1ed03538816fec/1606754905754/bumemibalisuluwiguso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a46de71-676a-4451-a576-97e8701129da/free_fidget_spinners.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_off0000c796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC796 4960 bytes
SHA-256: 8f090478be71b8c803d23d64b70c301bb9dbd6bc0d3d6f94082c749e5a1bf748
font_01_sfnt_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 11584 bytes
SHA-256: e68e3652327a8e61d8aa3c0ea9fe6c69a3e669f71c55050cd61a270355b202d1

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