Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba05c6a81b8732da…

MALICIOUS

PDF

77.5 KB Created: 2021-03-07 20:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0c4de38ddd3253a4cae215e5f7a1e3f SHA-1: c3eeecf0f9ce46b02e03d41571958cf644e9ad4d SHA-256: ba05c6a81b8732da843d3b55a5c4b87d72354cc21bdaa7a680b67160100a67cb
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing and trojan threat. It contains a large number of external links, suggesting a link farm designed to redirect users to malicious sites, such as the one found at 'https://midufefew.ru/wix?keyword=the+lighthouse+full+movie+free+download'. The presence of a 'Download Now' lure further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/wix?keyword=the+lighthouse+full+movie+free+download
    • https://cdn.sqhk.co/jekidase/DXggRgd/dexizesalagaxufipilup.pdf
    • https://lufojegixibebaz.weebly.com/uploads/1/3/1/4/131407324/lupunexumuda.pdf
    • http://kakorixow.mygamesonline.org/mubizixufugajeja.pdf
    • http://dajobod.getenjoyment.net/42806260324.pdf
    • https://katalajoguv.weebly.com/uploads/1/3/2/7/132740778/pusobidizezosoxareka.pdf
    • https://jotulamopusojo.weebly.com/uploads/1/3/4/4/134465369/resesazix.pdf
    • https://dolibaradodusop.weebly.com/uploads/1/3/4/5/134595809/xowopupapa-tadoxi-dusubakavugige-ditiviri.pdf
    • http://zatoxuvisovapuf.sportsontheweb.net/71869266189.pdf
    • https://cdn.sqhk.co/kexofodatop/Bibijje/tinuranabufi.pdf
    • https://cdn.sqhk.co/xejudawadoni/ajb4ibm/57644560756.pdf
    • http://tezuveripoxub.mypressonline.com/nutone_intercom_doorbell.pdf
    • https://zirefugat.weebly.com/uploads/1/3/0/7/130740019/rusonuvud_gidurabepoxemu_latitujitane_nawek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d43571db-9bbf-4d23-a042-383f48ce8eab/cobra_walkie_talkies_rx385.pdf
    • https://uploads.strikinglycdn.com/files/ef3b6047-0291-4afc-82fd-3c7dcd413b33/jibopenebololofuzolas.pdf
    • https://s3.amazonaws.com/jupevuxirapi/92555073463.pdf
    • https://uploads.strikinglycdn.com/files/de2be671-cf24-4bbe-8e3b-b7635983e176/what_are_the_types_of_hydraulic_fittings.pdf
    • https://uploads.strikinglycdn.com/files/7b0355e8-e380-4fa0-8a68-a88db35512d3/bodibaxujidaliweku.pdf
    • https://uploads.strikinglycdn.com/files/63ad9244-b87a-42b1-ba6c-96305f02d16c/analytic_number_theory_textbook.pdf
    • https://uploads.strikinglycdn.com/files/2305588c-99c5-49b6-bd11-4f974c3a3b45/schlage_keyless_lock.pdf
    • https://uploads.strikinglycdn.com/files/90f49fc1-7dd3-48bf-9da4-d2d41a1b6473/68986764960.pdf
    • https://uploads.strikinglycdn.com/files/3e696191-37b2-4e3b-abbf-daaed9fbc6e3/198173639.pdf
    • https://s3.amazonaws.com/sisaxu/sijupusaririlawexew.pdf
    • https://s3.amazonaws.com/resisuna/muwiwojatetefoxofulowin.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_off0000f37c.bin
36f40e302f181322d8fe2108d5e9e27d13216a26d360acc11e2ceba8deb51c2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF37C 5420 bytes
font_01_sfnt_off000105d6.bin
a6ae0645d949d913cc60a39cce7d904ed16f65289f117d70f522ba9d0c5ba7c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D6 10184 bytes

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