Malicious PDF — malware analysis report

Static analysis result for SHA-256 207c0f2ec633721b…

MALICIOUS

PDF

84.8 KB Created: 2021-03-16 12:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 31a102b8b82885961741795a54e95002 SHA-1: 81a257ace04c27222eb8b16a7a37458fa21882e2 SHA-256: 207c0f2ec633721bc413d498f3e7a72a291ad75965360ab9faa561d4703abdc9
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 0.9993

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://crophysi.ru/wix?keyword=bestine+solvent+and+thinner+sds PDF link annotation
    • https://cdn.sqhk.co/luvafuza/Ux4eFic/catalina_combo_update.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369769/normal_5fefa98a323c8.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/LlhfgjD/35355835529.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/48jhica/ralifonorubev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413223/normal_602e85146e23f.pdfIn PDF document text
    • http://malurafokopumer.22web.org/26590934520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_6020cc552fcb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_604b2a9e1457f.pdfIn PDF document text
    • https://cdn.sqhk.co/ribuwikoli/4jfihZL/lofuduzukufopatididasavup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcba048eb69e.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/heihhek/night_shift_stargazing_and_astronomy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f20e3d51-81b3-490b-8910-2e696c6524e9/ross_carbonite_solo_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1c7682-1ed8-478c-ac17-b5f8d20b5c63/tumomonorobipewosemad.pdfIn PDF document text
    • http://roluvad.epizy.com/68879105589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac83488-5bab-454e-84fe-59205b054953/jopemakivanevinuxim.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/xinenefebed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc88eda-6835-46e9-971c-b2cf8b652cdf/how_to_change_master_code_on_caddx_nx-8.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/lumupolasepeviwidajow.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/gerund_as_subject_and_object_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff07357-f5ce-41d6-bfe2-1f239de45acd/celebrate_recovery_book_4_lessons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d73b1754-291e-4eb8-a8cb-b1d70cae35e0/how_you_win_a_game_of_golf.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/present_past_and_past_participle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d07826f-4244-48ed-aa06-f5f51a46fc8f/roger_lord_of_the_flies_physical_description.pdfIn PDF document text
    • http://rebipilu.epizy.com/68385889132.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_off00010c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3D 5020 bytes
SHA-256: c7cb897948a80cbfe6a5404fdfac0eca465bc59b0b2e55b3cd920edd2caa27a3
font_01_sfnt_off00011d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4E 12052 bytes
SHA-256: 71e5b229fd0acfc0fe59994a8f891433ba3c4b15278ccd5b6386bd48e029d4d0

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