Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f6a0e9e061b9b5…

MALICIOUS

PDF

76.6 KB Created: 2021-03-22 00:06:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 45706d0b8c36b0e3f47ad7367817f717 SHA-1: 574ab97728df8201db2796b986e7beebcf46ace6 SHA-256: c5f6a0e9e061b9b5c1e1e960d7554537d78a353560785f80568ecaa13b7aaee5
126 Risk Score

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://soxebez.ru/wix?keyword=showbox+4.65+apk+download PDF link annotation
    • http://select-get.top/land_and_water_on_earth_worksheetchjzr.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/kakapimowak_newaribokenif_maxobozevexuna.pdfIn PDF document text
    • http://study-english-05.site/compound_shapes_worksheet_answers_math-aids.com5r1xn.pdfIn PDF document text
    • https://cdn.sqhk.co/kupodakojav/mtEjgGS/the_lightning_thief_musical_tour_cast.pdfIn PDF document text
    • http://abouts.space/century_21_store_near_meam91r.pdfIn PDF document text
    • http://juwaniwabi.medianewsonline.com/sap_basis_r_3_administration.pdfIn PDF document text
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/775ba7.pdfIn PDF document text
    • http://domavera.ru/dekudono8mfcp.pdfIn PDF document text
    • https://laxonetamaj.weebly.com/uploads/1/3/4/0/134096763/rinunakazurobur.pdfIn PDF document text
    • https://titoboxe.weebly.com/uploads/1/3/0/8/130874676/mejogak.pdfIn PDF document text
    • http://jakartapro.xyz/amiga_game_romsxh99z.pdfIn PDF document text
    • http://shoop-fg.ru/electronics_projects_vol_25_downloadg4436.pdfIn PDF document text
    • http://smartycredit.info/process_flow_chart_template_excel_2010wzfmu.pdfIn PDF document text
    • https://cdn.sqhk.co/livejizilul/fiehgig/expense_form_template_for_small_business.pdfIn PDF document text
    • http://eurosett.net/what_is_the_correct_order_of_harry_potter_movies9zl2a.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/ZDYw1hb/zig_zag_blue_rolling_papers_wholesale_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/jjkiBsE/dont_touch_my_phone_alarm_app.pdfIn PDF document text
    • http://twirlini.com/fixodesuwulebixiwafupp6yyx.pdfIn PDF document text
    • http://leree6.club/zkteco_5._0_attendance_management_software_freejgy9u.pdfIn PDF document text
    • http://jolidulikan.scienceontheweb.net/31851166471.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://netawuwimirixor.onlinewebshop.net/53145478758.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_off0000dcbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBC 5636 bytes
SHA-256: 6007022126854a3af7e4b50d6c36c710881c69222b1697e7b53bae04ef47cbb5
font_01_sfnt_off0000f00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00E 16528 bytes
SHA-256: 46803e717767d76a82ac322dae1dfdce7b74528c1e4f219c436864560ae08e86

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