Malicious PDF — malware analysis report

Static analysis result for SHA-256 963563dded56b768…

MALICIOUS

PDF

76.0 KB Created: 2021-04-28 16:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6df60f98d6a271ea1b30fc28197dd58c SHA-1: 1a0a776ed4a19972ebba22ffee6a7bd6b91240f4 SHA-256: 963563dded56b768aefd0c54aba67609689f47389331d474e067ca7974be9d18
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 0.9996

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://jottigo.ru/strik?utm_term=does+panda+express+use+peanut+oil PDF link annotation
    • http://fepaporipevari.mypressonline.com/66923923160.pdfIn PDF document text
    • https://cdn.sqhk.co/munenetifu/dOqhi3g/mawoguzodumugowusoxujewel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_6056d1e18cb6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_601bc5e91523d.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/the_mortal_instruments_city_of_glass_ebook.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/hNe7xjs/ludogorets_arena_skyscrapercity.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/5ifjchh/gutanobadisadilabagugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_601e80414cb37.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/tjifheB/ben_10_alien_swarm_full_movie_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dufelogaruf/5hihigf/memipisexapakobusa.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuvobu/bjdih2M/retroarch_dolphin_core_not_loading.pdfIn PDF document text
    • http://lofoporubatul.mygamesonline.org/alimentos_con_fibra_soluble_e_insoluble.pdfIn PDF document text
    • https://cdn.sqhk.co/gufemazibafi/5jjtZgh/elementalist_poe_3._12.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/bomupi/how_to_use_mendeley_desktop_offline.pdfIn PDF document text
    • http://lovelikomifikes.epizy.com/building_materials_and_construction_objective_questions.pdfIn PDF document text
    • http://fasudum.rf.gd/18327330969.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/23814840633.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/minnesota_rules_of_evidence_704.pdfIn PDF document text
    • http://vufuwuxe.epizy.com/how_long_does_it_take_to_say_1100_words.pdfIn PDF document text
    • http://ziduwor.epizy.com/grade_10_math_worksheets_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/adjectives_to_describe_sunny_weather.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/cursos_de_ingles_en_linea_certificados.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 5020 bytes
SHA-256: c995738bc2ed1ca0be70e6cd1c90ce45e25f6f28e2c4c725de2d71734046cfdb
font_01_sfnt_off0000fcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC7 11188 bytes
SHA-256: 14d71a193655438ff35eba3797338994c974973d687a121cfeb383e4b825eab2

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