Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0605ed84878dce…

MALICIOUS

PDF

70.9 KB Created: 2021-03-22 08:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b0746ca7b5b232c7801f8ef117343785 SHA-1: b56f80f8fad196a9e8ab4aab614d96ebe66c68eb SHA-256: eb0605ed84878dced447ebb79e98263ccb960597b026669bbcd4955672d479c1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/strik?utm_term=how+to+buy+jump+force+dlc PDF link annotation
    • http://gatorama.space/jujelodosapssoi8.pdfIn PDF document text
    • http://themarkuzmusic.com/somewhere_west_side_story_music_sheet3fzuq.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/glitch_photo_editor_pro_apk_1.121.6uptd3.pdfIn PDF document text
    • http://titoto.xyz/2907292406704zjj.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/iibw3co/suppressor_tax_stamp_status.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/Rjcicjg/mafozumemofapit.pdfIn PDF document text
    • http://fb-pageunderreview.com/metamorphoses_book_1_quotes2od4x.pdfIn PDF document text
    • https://cdn.sqhk.co/rapigufagi/ieiahj6/94834669659.pdfIn PDF document text
    • http://nout-sale.site/is_fitbit_charge_3_worth_itmy115.pdfIn PDF document text
    • http://presentinsta.online/xifiperuretaxedigowiehz4t.pdfIn PDF document text
    • http://stavki-na-sport.site/giluxuwobiwabanotv4w77.pdfIn PDF document text
    • http://7lessons.space/80302820612mvlvk.pdfIn PDF document text
    • http://instasavephoto.com/438898759399ny0y.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/guvaxenonuvujiviwusoma.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/dazinibonofobi/56699970417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbe47f9-c07e-447a-acd2-8b83933e4b18/citizen_mens_eco-drive_titanium_watch_with_date_bm7170-53l.pdfIn PDF document text
    • http://wumafopid.onlinewebshop.net/lisopojolowobitarorepib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa09a7b6-e599-4a4f-af7a-329948252f6e/sexual_orientation_definition_tagalog.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/substance_abuse_in_south_african_youth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9945909-4ce9-4512-a028-5b07b3c1758d/woveforaxesid.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/7513282186.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_off0000d7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AD 5284 bytes
SHA-256: 5efaf13bd998fd7028cd8850d36b21cad927b4eb522cda356ca4318fa3d3f46c
font_01_sfnt_off0000e9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A6 10744 bytes
SHA-256: 132a2f85dcc35feae5e9d3042c9af236bf065281048d1837f8014cdba1bd082a

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