Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e359d36c781368…

MALICIOUS

PDF

201.6 KB Created: 2021-03-14 14:07:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c15f27bd8d8e176b2f1ad723da4078a SHA-1: 523d0b972b5bcbe5e06e00c7554da00d6a6df2ce SHA-256: f6e359d36c781368d729f06baad2ab92a2d50ef6573db656d4e278a7b46b1e0d
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, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it might be a generated document. The primary malicious indicator is the embedded URL pointing to a suspicious domain, likely used to deliver a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://soxebez.ru/wix?keyword=mirror+of+opposition
    • http://teenagetutor.net/29226631635g4v13.pdf
    • https://cdn.sqhk.co/besudamuge/5EhdAih/alternity_dark_matter_campaign_setting.pdf
    • http://meine-gebuhrenfrei.com/samsung_bulletin_de_participation_en_ligner5ez5.pdf
    • http://lazokiwumemo.mygamesonline.org/nexipatikoximunixekefuzij.pdf
    • http://my-favshopd.online/what_is_sociology_class_aboutpax43.pdf
    • https://cdn.sqhk.co/pubusudes/XWihgkL/kuwadolovagodivaber.pdf
    • http://soldonlittleton.com/15467054624dq0tc.pdf
    • https://cdn.sqhk.co/wipedekis/5g6ibja/zudufugugizaka.pdf
    • http://meinekarten.best/jean_klein_quotesj20oo.pdf
    • https://cdn.sqhk.co/raxoxawupej/ehj4Hig/simulacra_found_phone_horror_mystery_free_download.pdf
    • https://cdn.sqhk.co/vewukiziwemi/bCjdd1p/46280057862.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_0106ced677bf45b49d0d4daeca175e50.pdf?index=true
    • http://bemabam.myartsonline.com/olympus_om2_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/d17bbcaa-c4c0-4ccb-b669-7ac317aec362/pilevuv.pdf
    • https://1f49b3f1-4b09-4f89-88df-03804352fc9a.filesusr.com/ugd/a51aec_95d05a2a6ad04f4e9c59310180da32bd.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f18d022a-2ae5-4a43-a901-d733f989c82f/gapusidijopirebobeli.pdf
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_1517470c089549db8efdbb19b499b9e4.pdf?index=true
    • http://jalijoruki.atwebpages.com/prentice_hall_america_history_of_our_nation_answers.pdf
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_1a5dfced0e294ee7b721a53d6858c3a0.pdf?index=true
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_a2b69a4f21bb4398aaff7a00cdd6524b.pdf?index=true
    • 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_off0002e203.bin
a07da15338bfca953f20accb88b2240f63534fa8cfef67794ccb34aec7f7dbaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E203 4660 bytes
font_01_sfnt_off0002f1fa.bin
c599ab6ece818c4f54df64572574954b65e8715678126984ebc1a0edb2ca5dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1FA 11240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.