Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9cf1bbf3f47f175…

MALICIOUS

PDF

151.7 KB Created: 2020-12-22 14:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4f3be1fa0e0b9b51574f53df21901e57 SHA-1: 1fe4d241d959280db7c01a6dca6edb9fb5eef548 SHA-256: b9cf1bbf3f47f1750be93bf3bf0a4b40eab9838c0b8a2ae818377f2b6ae4a989
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 0.9987

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://trafficel.ru/strik?utm_term=rogue-+like+dungeon+crawl PDF link annotation
    • https://jukovuwivoxufab.weebly.com/uploads/1/3/3/9/133997180/vuxana-zesejefifige-murinatajan-nifewemaketumi.pdfIn PDF document text
    • https://mujubafajereked.weebly.com/uploads/1/3/4/5/134595908/143068.pdfIn PDF document text
    • https://vajibudutoneraz.weebly.com/uploads/1/3/4/3/134345344/64e83bc3fd.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/894842.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/1672160c71976.pdfIn PDF document text
    • https://duveniwapawas.weebly.com/uploads/1/3/4/2/134265961/zikafotulexav-vowogobuvopuji-vazuwavave-gizezu.pdfIn PDF document text
    • https://mulelene.weebly.com/uploads/1/3/4/4/134440938/4128283.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/salosibejodod/azerbaijan_visa_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/arijit_singh_songs_audio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc578abd49dd1244753261b/t/5fc8b01013f8d93bf20ac811/1606987793561/the_infinite_black_free_mmos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc505c01c8c7413144c6c55/t/5fc7f5246812454a3d8f9697/1606939941517/vafusateravavavodixixi.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/22503841161.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/sokekogimivitupum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdf246b2dcd53187f20af33/t/5fdf3dd91c66f52f5f998f25/1608465881479/stardew_valley_community_bundles_guide.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FCC7 3376 bytes
SHA-256: 0cf436d4b512082f0b953951c77fa0e78e11c8595d89eba23b7494ff888bcbd8
font_01_sfnt_off000208e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x208E6 4924 bytes
SHA-256: 84dd840a50279f108ed13fdf3f3420f0205dcc1687837a01c3d92474194f90a2
font_02_sfnt_off000219bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x219BF 12120 bytes
SHA-256: 77b8f89fbe511ff88817254eb341d6caecb404c1d57b4549a70d7f7570785615
font_03_sfnt_off00024268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24268 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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