Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc2c35874b135e9…

MALICIOUS

PDF

72.3 KB Created: 2020-12-11 00:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ce3587e1427a4e327812d1079b1bfb20 SHA-1: 5a8ea3c2fedfa01fc74677cc4b1cb8875dceea68 SHA-256: 9bc2c35874b135e92d3b547d06bc4f06c6ed8d4b55c033310cdb06ee46924945
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 0.9997

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
  • 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://traffmen.ru/123?utm_term=champions+online+powers+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4425921/normal_5fcd346999265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5fad7cdc01af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484375/normal_5fb6ab2893f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5f910bcaec429.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387230/normal_5fcd266606424.pdfIn PDF document text
    • https://foxagizak.weebly.com/uploads/1/3/4/3/134332010/rasakirepifobut_togol_nesero_barimekuvanuw.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/dalava/behind_the_bullet_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/nadokepulevo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07dde27a199023ab34438/t/5fc45d523c02f22b9d9891d7/1606704467242/tubular_reabsorption_and_tubular_secretion_explain_the_terms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd5b5f6-5012-4da2-8fde-a8f2dfc83629/47150409562.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f827356-c846-4b23-8c8a-799a55c12d1c/87733433646.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C7 5368 bytes
SHA-256: 49db0d49b5ae990ac08af0bc86debc2ae73f139c93047d0b27aa84d277ff1300
font_01_sfnt_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 10168 bytes
SHA-256: d572cd35bd606295fc2b12a5e73eff3aff93a5cd25c3ae16e29159899cc0aea1
font_02_sfnt_off0000fdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC5 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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