Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef870500ea2a89a…

MALICIOUS

PDF

74.5 KB Created: 2021-02-15 00:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 01e6e0407aebe7c09724333a66dba74f SHA-1: 1bdacbd90a4c60725537c7e2f63afa6aaf0c3c74 SHA-256: 4ef870500ea2a89a1c81e578a6839e70dd0fcab449dd191d6b678c1aec2b4e6d
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/123?utm_term=mcoc+arena+cutoff PDF link annotation
    • https://cdn.sqhk.co/remowiwa/a3DThaI/noguwisemiv.pdfIn PDF document text
    • http://khareedforosh.com/samusubefewakom370h.pdfIn PDF document text
    • http://itsamorem.com/911207835358vgfg.pdfIn PDF document text
    • http://org-fruit.space/wurepevuwananc4x.pdfIn PDF document text
    • http://phrensy.co/guild_wars_2_class_guidel4wl1.pdfIn PDF document text
    • http://letxxnx.org/tevonakofozago5v1sx.pdfIn PDF document text
    • http://healsmall.space/burgundy_formal_dresses_australiaksh69.pdfIn PDF document text
    • http://bridgecommerce.com/change_notification_sound_android_app21hez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/brain_anatomy.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/mawomimigi.pdfIn PDF document text
    • http://puwomuf.rf.gd/kexamopajawi.pdfIn PDF document text
    • http://movafomuwexowix.epizy.com/zenawuzegubede.pdfIn PDF document text
    • http://jefelaxe.epizy.com/92262334165.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/pokaxowibepaverazibaju.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/un_report_on_climate_change_march_2019.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC58B 4672 bytes
SHA-256: e7a4820dc4f8a1c5b71a082775c6ff6c357a3c0efc4bcc7f7214df67db29702e
font_01_sfnt_off0000d584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD584 2640 bytes
SHA-256: 23a24c6a760be8789d119ed0fb5a9e8d815a2de7d2848521ad4d3640ccd4bc4d
font_02_sfnt_off0000e11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11F 10988 bytes
SHA-256: 11c46ce173ff832ab5a342adc456582749528b45188f15897fbda942ccb13cb8
font_03_sfnt_off0001063e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063E 16552 bytes
SHA-256: a890b211bde20fc72b9c071a0c20ec2f78af89208376a56f20f0927ea20cf22e

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