Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f2c445873604b0…

MALICIOUS

PDF

72.7 KB Created: 2020-11-11 14:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5e1a5e3c5ab695930e64100c70c6ba4d SHA-1: 14275a3b105fb3e73c7586b38587e496473372f6 SHA-256: d1f2c445873604b08299c8da04ac4d0a5d7c00aa139340e0b7fa22d9d7e367fa
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?keyword=my+hero+academia+ep+55+dub In PDF document text
    • https://rawutakoze.weebly.com/uploads/1/3/4/3/134326806/gunapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482671/normal_5fab00d5c3471.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/migajavapumumo.pdfIn PDF document text
    • https://posajegodat.weebly.com/uploads/1/3/4/4/134477503/datizalirifazaxujif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5fa1252885b52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87320f76237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd4a1b27-0f81-4986-af15-db067c5c7d15/lokojupowaxazelajinaviga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da57df7-5147-490d-b46b-9215cbdb58f1/reference_manual_davinci_resolve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f27b908-6c31-44ca-8574-94e660046e60/boogie_woogie_reindeer_girl_in_red_dress.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991defa7-cbb8-4f10-a5e5-a63ace0558e8/maxuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccd5748e-d9e8-4a77-90f9-9360da84dc16/39120140997.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_off0000d3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CA 3016 bytes
SHA-256: b2cf9e01dadf34289b843c3ee1207858368f4c683cece2da15f2f21a298c7008
font_01_sfnt_off0000de86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE86 5476 bytes
SHA-256: 1b729074013ba0ee091f009622ecdd0f40a101d96efe6702d779481fbee7f3c7
font_02_sfnt_off0000f107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF107 10868 bytes
SHA-256: 69c01299d0cc561f19b19e6ddb115c6af5148442eab1b281e2edfd51fcb96ba0

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