Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8b8965d5699659…

MALICIOUS

PDF

86.1 KB Created: 2021-03-21 00:47:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d3fdde620231c46319c1be9f4ba7a5ab SHA-1: 595569ee1214415bb6f79f125199978c5a1f6e35 SHA-256: 6c8b8965d56996591ef66825d12d49a3bca54239aa99928714f3db20634d543a
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 0.9991

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://botokaw.ru/award?keyword=al+arabiya+bayna+yadayk+pdf+tome+2 PDF link annotation
    • https://cdn.sqhk.co/lojibuwe/KPhghbn/34262208607.pdfIn PDF document text
    • https://cdn.sqhk.co/votexeruwiti/hhgIidj/85523301486.pdfIn PDF document text
    • http://indital.space/pathfinder_strange_aeonsm0ygw.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/array_of_pointers_in_c.pdfIn PDF document text
    • https://cdn.sqhk.co/lomekojop/Bjbih7M/ding_top-_up_mobile_recharge.pdfIn PDF document text
    • http://kraftmann.su/telelajutuwimulirufililqmvb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375087/normal_5ffc4dd5f0868.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/Ojgcrgd/33284407255.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/mbDjfja/wikihow_to_do_anything.pdfIn PDF document text
    • http://helpverifybadges.com/5338441473v0z5s.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/3Wb7geJ/word_game_apps_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_60209a4eb746e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369505/normal_5fdf2c5cac173.pdfIn PDF document text
    • https://cdn.sqhk.co/derebeduno/5MAsqgh/dobexedijotumabar.pdfIn PDF document text
    • http://cadenalia.com/dodopakevugeduzeb5s8sc.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/aRJheGR/www._pet_population_control._com.pdfIn PDF document text
    • https://cdn.sqhk.co/guranotup/hhgegeJ/dirt_bike_miniclip_game_free_download.pdfIn PDF document text
    • http://stalekost.site/adamantium_vs_vibranium_videod5lw8.pdfIn PDF document text
    • https://cdn.sqhk.co/xafogatok/ggElhif/lightroom_cc_2020_watermark.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/1545544473.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/online_chat_games_with_avatars_no.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/nice_bronchiectasis_guidelines.pdfIn PDF document text
    • http://jupegojut.atwebpages.com/45471783521.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE9 5436 bytes
SHA-256: 94105a85a5ae9933f2ce83aaa3fb5837c3f314eb3fafbd7987b8930eb90a088a
font_01_sfnt_off0001025c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025C 11896 bytes
SHA-256: f565b33609311bea42053c022eeb80c72b9f49be7c152fbd8c795525acb4ae00
font_02_sfnt_off0001287d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287D 19996 bytes
SHA-256: 2bb29786309506f42baa9c06ac8d25bc599601939480a598338bd1b0e25b728b

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