Malicious PDF — malware analysis report

Static analysis result for SHA-256 374d940c95f5e917…

MALICIOUS

PDF

78.8 KB Created: 2020-11-22 00:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8852895e5e1cf67509b0125803270230 SHA-1: 1fe6c54f5f96c8ecd5afaf537ea63dbd9032546b SHA-256: 374d940c95f5e9177e81e666e6982f2b29d27553dcfbaac865dae5a1e3fa9441
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 flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URI points to a suspicious domain, likely used to host malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware delivery.

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://trafffi.ru/aws?utm_term=ball+growing+guide PDF link annotation
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/d52a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_5fa6bd0339428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f963a0fb9c1b.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
    • https://uploads.strikinglycdn.com/files/80a725da-57cd-4ed0-81f9-2263b5a282e6/introduction_to_global_health_jacobsen_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c2988f-196e-4eb3-b5c5-2c7528b013a8/10441560529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aabea993-d7fa-4936-a035-169d4990a619/21519456900.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/types_of_discourse_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1169c4a3-d489-4f19-b389-c6c2c862eb1a/ribudusukikizujisumine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b39cb85-05e1-4042-9944-36a2de14ac03/91373825032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4f7fe6-2caf-4a27-b53b-4b62f0aa8466/lingusta_indir_cretsiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e943a541-1709-48d4-9b2e-799b6c9e397e/josiwidagekepuje.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/balance_sheet_analysis_guide.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_off0000e6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D9 4760 bytes
SHA-256: ac56cda03c57f1d77f1a4bfbff97942267e0d2c5a61edc78e061d213a112ba36
font_01_sfnt_off0000f711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF711 11868 bytes
SHA-256: a9a66a59d89f11d31f65b4f8e3273daf88fc637c70c172e7d992201e6836fb5c
font_02_sfnt_off00011f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F57 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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