Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed9d45abe5bcfb3…

MALICIOUS

PDF

76.2 KB Created: 2020-12-04 05:04:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8effdf7325a93914cdd0493dc58e12f9 SHA-1: b78d184c59e4e2e18362759966dddc3049cf977a SHA-256: aed9d45abe5bcfb390ae67781f24dde33262fbdaae40b3953f03d2605864c9d5
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 ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, trafffi.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'The culture code summary'.

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
  • 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/strik?utm_term=the+culture+code+summary PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/605a141b-47fd-433f-877e-7b07e8a45726/totidajefoveba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e45932-8325-4a44-9411-a4db81879298/tujhme_rab_dikhta_hai_download_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d58261-2190-4969-a214-ac56f83a939c/xafojelimemudowukibil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07daea2a-f437-41c2-a170-b680d8465278/resusoduzaxofominozol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da45ac2a-e6a2-4e8a-bdc2-a808fef680c0/18249078062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5096330-4d05-4f8c-a00a-170dde36ceee/lenovo_is6xm_motherboard_f_panel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63609d77-c964-4c93-b722-cad5e5736ecc/funijuzitetadaxoliz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52be9185-58da-4cb6-9691-e364db80245e/fapekaturidimolaf.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/59674467179.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/gujutakujofewasupoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d468b0-1928-4ffe-8c28-908008cf9a3f/watch_4k_movies_on_xbox.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/luxep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362ecba7-8f46-4ec3-a2d2-90f60e5d67ab/goxajefari.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_off0000ee84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE84 5228 bytes
SHA-256: d06e3724523eb344bbf3ae7ef108e03d134bf6d75bcd8632ca03d717c3f7e6eb
font_01_sfnt_off00010023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10023 10436 bytes
SHA-256: 269f73f609410deb3b2af66b857d68e2a03d7c146e41d775cd437f83db0a0468

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