Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61c185b9ff1d3a8…

MALICIOUS

PDF

65.1 KB Created: 2020-11-26 08:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 6f6be65477e26f47b89ea564a6a5a338 SHA-1: 148b1c9e0e11e9048944eebe6d363a9e43f961cc SHA-256: e61c185b9ff1d3a8be65d26de5aa595fc850931bf9de52847c0da6290b0787a4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to online games and the authoring application, suggesting a lure.

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://trafffe.ru/strik?utm_term=the+lion+king+free+online+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423427/normal_5fa0bf950ef5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_5fa72a6fedbcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_5f993d5a780c3.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/e65cc080-b9bd-4e2f-a18c-a86d59e365a0/tusimebinekodovafinamuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e665b28-4619-403e-86ce-8e3c25db4c52/amway_india_business_plan_powerpoint_presentation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d40a3e8-734e-40fa-b904-3a750141ecfb/metojufupitabigevozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d94591-2782-4faf-b28c-29801f2fd75f/bakepodetoverixizobapali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c76078-0a6b-4710-9674-af6ca6131d9a/teruxefosigebinekebix.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/como_baixar_em_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4346b4d2-a1dc-4798-87d5-5a4ce07e302b/lion_king_kiara_plush.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5041b562-4d2f-4f81-ad15-499834e29b19/miliwudak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b7e3a9-673b-41b1-9bc8-aae6e7ca977f/perepol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4df75a67-3262-4155-a055-fe23ce6b91a6/12600006867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6117d69e-2a45-4f18-9cb4-a73411704add/88734940055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b815d8b-3fb4-45cf-a690-a4470b2f60ea/ryobi_caulk_gun_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06896060-1a27-4c13-b9a8-7ad7e957d65d/soxokudize.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_off0000c32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32A 5192 bytes
SHA-256: cc138b58d4395f8a885ff8450da32f6c1cfc223bf055c8546e292482f0c040ef
font_01_sfnt_off0000d4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AA 10284 bytes
SHA-256: 910ebb28426b67181b05b854435c0fdb32bcf0b63127255eea1616a7e658b64c

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