Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6cbb285f4038ed…

MALICIOUS

PDF

85.0 KB Created: 2021-04-20 07:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 273d0c0fc1e5116a72456c2802b594dc SHA-1: fc1b6e59734834aad03f31b04a49e2473c2d6888 SHA-256: 7e6cbb285f4038ed2225658c26a29facdd0c9a1026c32200b39a3c7bd6092936
126 Risk Score

Malware Insights

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

The PDF document uses a lure related to installing bat boxes to disguise its malicious intent. It contains numerous embedded URLs pointing to disposable hosting domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious content, likely designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://dugedepap.ru/strik?utm_term=how+to+install+bat+boxes PDF link annotation
    • http://ighelperscenter.com/glock_armorers_manuali6by8.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/vuvopuvomedifa.pdfIn PDF document text
    • https://jaradaka.weebly.com/uploads/1/3/0/8/130813635/2440802.pdfIn PDF document text
    • http://waliduv.mypressonline.com/34119948727.pdfIn PDF document text
    • https://mewerenazedesaf.weebly.com/uploads/1/3/4/8/134885553/8229081.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/define_addition_of_vectors_in_physics.pdfIn PDF document text
    • http://badgesverified.com/zejibililibogaxgjg7.pdfIn PDF document text
    • http://custits.space/4849544871kcobb.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/nabujupotumoxusaja.pdfIn PDF document text
    • http://dowotezovemalo.mygamesonline.org/mikakepimo.pdfIn PDF document text
    • https://zigudawaza.weebly.com/uploads/1/3/6/0/136035030/fuxovusunerero_rinenifuza_makoru.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/bbc59be90.pdfIn PDF document text
    • http://cryogen.me/assam_university_pg_application_form_2018n8m87.pdfIn PDF document text
    • http://jobware.pro/jakaxavamadokivenebuvuwodj81p9.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/23331563041.pdfIn PDF document text
    • https://bosubunu.weebly.com/uploads/1/3/4/6/134693877/fa17404.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/numunenoji/97942348545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c494066-b172-4dd0-9ae7-e0a3ba034c4c/java_swing_layout_north_south.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28bf8df2-30e7-42ff-90d7-a91aff4f28b9/how_to_use_items_in_ff7_remake_hard_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a148db4f-9d18-414c-b25e-ffff477a0eff/7855523812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d4057a-bc93-4754-bc6f-7aebb31ae9c2/digital_marketing_course_in_delhi_government.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64cd2b78-ac93-4e5b-8e20-96336fa61166/comentario_de_lucas_john_macarthur.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/gowodimorabowejaf.pdfIn PDF document text
    • http://palibam.atwebpages.com/gebenafivaned.pdfIn PDF document text
    • http://bizedesaxifu.onlinewebshop.net/bhagavad_gita_english_sanskrit.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_off0000f4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FA 3304 bytes
SHA-256: 0eee0c717c3fd98372df3d2c2f281b74e80190b34768fce79aa1701b8120bcef
font_01_sfnt_off000100e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E0 4632 bytes
SHA-256: b348b8d4632004b296c21efb8c2963a54fa02423ebea184ef01b32459259e74e
font_02_sfnt_off000110b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B1 11008 bytes
SHA-256: c9ae84229eb39f12600a57d3f802a61305d50dc4c30e373e65f89046ef536868
font_03_sfnt_off00013609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13609 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230