Malicious PDF — malware analysis report

Static analysis result for SHA-256 d776f9b174e631b4…

MALICIOUS

PDF

81.3 KB Created: 2021-03-28 17:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4467b4d2518b50fa9e79bccb30cd1f5 SHA-1: dfaba3aa2cceb6924bc6e4bae4291f47c714739a SHA-256: d776f9b174e631b4b93f9935588976b249673694378bee836c32558b48abda02
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'Ragnarok online game manual x3', indicating a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://bologen.ru/wix?keyword=ragnarok+online+game+manual+x3
    • https://muvipedoboxeju.weebly.com/uploads/1/3/1/1/131163867/9251900.pdf
    • http://electrumwallet.buzz/3498922011303fne.pdf
    • http://covid-19online.site/ctls_parent_square4za6h.pdf
    • http://canlisohbetim.net/tolananizifumelakisakuyhxb.pdf
    • http://axecheat1.xyz/96682870952dda6c.pdf
    • http://usejus.pro/thetford_aqua_magic_iv_replacement_seatdnjpr.pdf
    • http://abreudesigns.com/babubatamazuhp50w.pdf
    • http://carishr.com/23067490774kvxl4.pdf
    • http://3203epworthcres.com/what_kind_of_oil_goes_in_a_2006_honda_odyssey_2007_takebb8bf.pdf
    • http://raftgjgr.space/90745139545u9f8y.pdf
    • http://bosnoslovnoejelaniekupit.xyz/analyzing_amino_acid_sequences_to_determine_evolutionary_relationships_worksheet_answersbi1uh.pdf
    • https://filalodov.weebly.com/uploads/1/3/4/6/134673241/c3facfec25e5.pdf
    • http://tryporte.xyz/cccambird_48h_apkwpmmw.pdf
    • http://walletelectrum.buzz/nusikakuwumujisoxukeiw77w.pdf
    • http://wekeb.space/963018003562rq76.pdf
    • http://tertov.xyz/sapilorigokttfzs.pdf
    • http://ersoil.fun/wegaxoiuori.pdf
    • http://btsworld.org/wezinodovywpf.pdf
    • http://copyright-helps-team.com/how_to_add_a_hard_return_in_wordimr39.pdf
    • http://geosen.net/beriwalufomitefiypw66.pdf
    • https://mizabago.weebly.com/uploads/1/3/5/2/135299272/bujunepulevofujoti.pdf
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/fb3a0dd15bd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3a7ef13e-1b55-4d3e-bf91-5e75942597c8/57802192685.pdf
    • https://uploads.strikinglycdn.com/files/b3aa2bfa-f0a7-426a-acbc-874c7818b91c/best_app_to_learn_python_programming_free.pdf
    • https://uploads.strikinglycdn.com/files/0388d133-206d-4a74-b323-206db21c85f2/zewikenute.pdf
    • https://uploads.strikinglycdn.com/files/9e420c0a-46ac-4a62-a377-059cf16f7418/25324919565.pdf
    • https://uploads.strikinglycdn.com/files/4ba5e7db-60c3-4afd-a56d-66f07cbed03c/wijuvetor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103a9.bin
193cfb4ef34d9d148edaac47a1452200b443323198950f1a1a534c4a2968e786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A9 5132 bytes
font_01_sfnt_off0001151d.bin
7225a5e61658614a95d50d9c094c051f57da0f36b51d49194648ed1ae545ae20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1151D 10016 bytes

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