Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d1a1b4ffe6e715…

MALICIOUS

PDF

79.3 KB Created: 2021-04-12 19:34:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 68ef69f9449fee052e1daaf04b8666b1 SHA-1: 912617348718bb6effb7e99bb2309646fb419e67 SHA-256: 35d1a1b4ffe6e715a4c1440685b1654dc0a196c50f93116688a0d937cefa0e93
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://nipisod.ru/strik?utm_term=the+other+side+of+midnight+book+read+online+free PDF link annotation
    • http://weraka.online/kenneth_hagin_bookstoreckotz.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/6jjjcgg/bowling_tips_for_cricket.pdfIn PDF document text
    • http://mexawolin.medianewsonline.com/bill_of_lading_fedex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447497/normal_602422fe6c071.pdfIn PDF document text
    • http://setixin.iblogger.org/magazine_template_powerpoint_free.pdfIn PDF document text
    • http://playmarket-online.com/how_to_rebuild_briggs_and_stratton_enginej6l78.pdfIn PDF document text
    • http://canonsburglake.org/what_do_different_color_rubber_bracelets_meanuhcyj.pdfIn PDF document text
    • https://cdn.sqhk.co/baxajufim/6J1jege/wakedemunexuzojetolire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460076/normal_6041af8539ba5.pdfIn PDF document text
    • https://cdn.sqhk.co/joxopejufito/jWggSOO/chess_tutor_software_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/turovonunido/yichjhb/gotokiku.pdfIn PDF document text
    • http://nosixavol.sportsontheweb.net/yoga_asana_book_in_hindi_free_download.pdfIn PDF document text
    • http://nilanudid.iblogger.org/agricola_rulebook.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/jVhhGif/sushi_cat_game_online_free.pdfIn PDF document text
    • http://ar-foto.art/what_is_the_formula_to_find_rate_in_compound_interestamv05.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/ehfMigH/adidas_face_mask_black_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/twia1Tu/modern_furniture_online_retailers.pdfIn PDF document text
    • http://tehnoprom.org/xfinity_xr15_remote_codes_for_onn_tv93y0t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gaxomin.rf.gd/peace_like_a_river_book_club_questions.pdfIn PDF document text
    • http://nununad.myartsonline.com/officejet_pro_8600_ink_cartridge_replacement.pdfIn PDF document text
    • http://kibululugavi.epizy.com/online_challan_form_ppsc.pdfIn PDF document text
    • http://lugenizuridaj.atwebpages.com/causas_de_la_agorafobia.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 5472 bytes
SHA-256: 05f1bc36ea124451ba2f3f29d1ae1880da17f951bbb827c67cd2cb442000b3b7
font_01_sfnt_off00010bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDE 10508 bytes
SHA-256: 51753201c2f6e1d77a53dc2c288d627ced8453331eaf9265538a552234ca1058

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