Malicious PDF — malware analysis report

Static analysis result for SHA-256 715f196ca48b39c7…

MALICIOUS

PDF

69.5 KB Created: 2021-03-23 14:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c03f8f313c93fb9fbc771fc2ba1ba188 SHA-1: 9b853c4d618e021b8b94a917d0b53af05784ebda SHA-256: 715f196ca48b39c7a044f180e873b3e048c3158a375e9aa2edc46e8f581b92a0
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=nti+2020+florida PDF link annotation
    • http://gifuketedep.22web.org/27370892226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366625/normal_5fcd6defec2b9.pdfIn PDF document text
    • http://bezigex.iblogger.org/sifuzewamefozon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384316/normal_600298c251a16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453335/normal_602f601f4ca80.pdfIn PDF document text
    • http://toguvuveleguna.22web.org/jexolimobasizikin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379377/normal_60407539ab636.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/73842869488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fff0424a67f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubujizuz.epizy.com/8717447270.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/doing_evil_crossword_answer.pdfIn PDF document text
    • http://vebodunusugi.rf.gd/xuvimabubamoxope.pdfIn PDF document text
    • http://pomuvoxibi.epizy.com/how_to_memorize_the_phases_of_the_moon.pdfIn PDF document text
    • http://pugavidugipiton.rf.gd/55777818633.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/custom_adapter_checkbox_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09eeeab3-a7f0-4212-bbc0-3af4cf5fd727/discrete_and_combinatorial_mathematics_fifth_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29cbbe8e-8977-47ee-bd56-472283391d23/tokyo_ghoul_re_call_to_exist_ps4_digital.pdfIn PDF document text
    • http://fipiravujed.epizy.com/abdul_qadir_jilani_books_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf50710-6a76-451d-8537-6e55615d6870/how_to_make_money_on_onlyfans_selling_feet_pics.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/apple_earnings_report_history.pdfIn PDF document text
    • http://rabewifawilowe.epizy.com/58947055730.pdfIn PDF document text
    • http://voboxixet.rf.gd/cross_multiplication_worksheets.pdfIn PDF document text
    • http://ponowuvibux.epizy.com/33378850933.pdfIn PDF document text
    • http://xujogefup.rf.gd/chogada_tara_song_bestwap._link.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_off0000d09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09F 4964 bytes
SHA-256: fa59f03f84a26f99fca78c2000fcc0a17ea4128c861514b07aa4ce0c77af1c8e
font_01_sfnt_off0000e196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE196 11308 bytes
SHA-256: 17d260e65cb191b5c183c4728a6721357d68d2a097cceb99e9e833d7951c1a88

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