Malicious PDF — malware analysis report

Static analysis result for SHA-256 cade4ac08c69acf9…

MALICIOUS

PDF

127.6 KB Created: 2021-04-02 16:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 361449d14a70b35cfdf030d7b7cbb096 SHA-1: 962d77fae4077b6599dbf0ae7ca608ffab3a1025 SHA-256: cade4ac08c69acf94039c4e6a58fd570f0e8e9490561356989c1270d9fa073fe
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 0.9955

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://fokemale.ru/strik?utm_term=twilight+new+moon+tamil+dubbed+movie+download+tamilrockers PDF link annotation
    • http://zanapipok.getenjoyment.net/an_inspector_calls_key_quotes_gcse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_601a37f2583b6.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/bEhaChb/tails_os_raspberry_pi_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_6047224940610.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381759/normal_5fdfd83a34193.pdfIn PDF document text
    • https://cdn.sqhk.co/fupupusamun/ijlOjh6/pendidikan_era_society_5._0.pdfIn PDF document text
    • https://cdn.sqhk.co/vopiruwikil/4Leitjd/download_game_true_football_2_mod_apk_2020.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/67179218722.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/70186445721.pdfIn PDF document text
    • http://kiluzilaw.sportsontheweb.net/44939024593.pdfIn PDF document text
    • http://delinapod.mypressonline.com/vukuvozavupisajaxira.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_5ffd2ddd94413.pdfIn PDF document text
    • http://mukovasisoro.mygamesonline.org/formation_apiculture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_5fd344d3f1b01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_0916c2cc2a0b4f6e89599ca1f5510971.pdf?index=trueIn PDF document text
    • http://winimoviwimi.myartsonline.com/40435591697.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/xofajirogeleb.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/benefits_of_using_face_mask_sheet.pdfIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_c5afb4336b384d978492400cf7d8dc1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gebukil/salewuborupi.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/muwul.pdfIn PDF document text
    • http://sisufovofow.atwebpages.com/fupodexoxugod.pdfIn PDF document text
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_cb4b3596f57d40bdaa4bc11c8ad280a7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/7853099612.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001b5e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B5E7 24580 bytes
SHA-256: fbc67a6739980930894c883c1e709f03565804d1c6a553f49d43eaa46ba1105f
font_00_sfnt_off000145fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145FA 4960 bytes
SHA-256: 78c0b305313a8658d2e9b95dbede8af2b5cc67da1f2372d193bb39b62e1a9bdb
font_01_sfnt_off0001570a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1570A 5540 bytes
SHA-256: 6e27cad49daadd7bc80322eb94bb75b510f487ec29fd710035ef36c12fa99442
font_02_sfnt_off000169a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169A8 10372 bytes
SHA-256: 95bf2d734655ed6e7ec08cf757378c0061ab237d579bb73e9ed22e829ea03933
font_03_sfnt_off000186be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186BE 15052 bytes
SHA-256: 00cd26e2a47c0e338aa892f757dd08156fbcbb021ce6781b55fe6c75e888e330
font_05_sfnt_off0001e0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0E6 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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