Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa64f0286e79c89…

MALICIOUS

PDF

79.9 KB Created: 2021-03-23 00:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 975a24b921a08227f6ff311d8d2b7f7f SHA-1: 172f036347aa6eb8aedc7c75e9905c34b7b944f0 SHA-256: daa64f0286e79c8999bf7c9dd2c04f565b1e289bc99965209996a20d16d93c98
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 0.9993

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://jumiwimov.ru/123?utm_term=dryer+sheets+in+spanish PDF link annotation
    • http://alcozerox.com/xixesowa1zyad.pdfIn PDF document text
    • http://easylearning.space/vixawazukipotesaw42h6o.pdfIn PDF document text
    • http://zdsshop.top/how_much_does_it_cost_to_get_scoliosis_surgeryllolo.pdfIn PDF document text
    • https://bafafodalub.weebly.com/uploads/1/3/4/3/134367540/fifanebaxaxexal_xukevamaduw_tuwudud_xokupoz.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/91916016383.pdfIn PDF document text
    • https://sapuvitajesi.weebly.com/uploads/1/3/0/7/130776539/27bfec596f.pdfIn PDF document text
    • http://timecodes.net/sql_server_2012_black_bookrugsm.pdfIn PDF document text
    • http://velesvoyage.ru/76278961372sdvmt.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/epa_risk_management_plan.pdfIn PDF document text
    • http://topcabinets.xyz/62349568835oj46h.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/best_device_to_read_comics.pdfIn PDF document text
    • http://wirelessinfo.ru/dunkin_donuts_delivery_menu_pricefr19r.pdfIn PDF document text
    • http://instapriz.site/91877534162uhlq4.pdfIn PDF document text
    • https://kalokawagubur.weebly.com/uploads/1/3/1/3/131398574/nevuge.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/download_true_skate8z38u.pdfIn PDF document text
    • http://study-english-04.space/43785444354hvq2x.pdfIn PDF document text
    • http://mujubow.getenjoyment.net/arapa_kelimeler_yazllar_ve_trke_anlamlar.pdfIn PDF document text
    • http://turistik-a.ru/nazixasaziwijesubuug6a1.pdfIn PDF document text
    • http://soul-felt.com/577477509806fqy4.pdfIn PDF document text
    • http://shimano-stradic.ru/234561024374st6i.pdfIn PDF document text
    • http://markettop.pro/62506844274sfg2t.pdfIn PDF document text
    • http://megatorg.ru/romeo_juliet_tamil_songs_download_starmusiqrqvkb.pdfIn PDF document text
    • http://golden-bridge.pro/what_are_the_5_general_categories_of_sensory_receptors6k48w.pdfIn PDF document text
    • http://elerctum.org/printable_weekly_timesheets_templates7mtr8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2D 4976 bytes
SHA-256: 7c5d7d80d01479c03b150290f93c016106131762b7f89a3413fa41f32c61cd5d
font_01_sfnt_off00010d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1E 11196 bytes
SHA-256: 9833b9c6a5a25a93d0aba0c0d2c68ab8fa121d1e5bf7930a507421533f44a96f

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