Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9177c8f996b65f…

MALICIOUS

PDF

98.5 KB Created: 2021-03-23 14:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 094a41006d4846dd2d04bc0097bfeba9 SHA-1: 78cc668558d8cc97e04b7d6ab8674550aeda7af1 SHA-256: 0d9177c8f996b65f730d1d9d44ee36d32e634ee047c9da9eab77bbd9d013ca03
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a critical heuristic flagging it as a phishing/malicious document. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'business case analysis pdf' and is associated with external URIs pointing to potentially malicious domains, suggesting a phishing or malware distribution lure.

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://xezojetit.ru/award?keyword=business+case+analysis+pdf PDF link annotation
    • http://polobasopika.mywebcommunity.org/22919942237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426075/normal_604844f583b55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379240/normal_5fe3bcdeb84d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491439/normal_5ff22c64f11b2.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokonabat/gixidhb/drive_ile_video_paylasma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409254/normal_600cd04a059b5.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/gj6xW6L/nufokawofaluwiluvin.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/tDhc0MB/lawuridiseruk.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/CLuzqii/janevevopesebatafinikafed.pdfIn PDF document text
    • http://awpmode.com/fifty_shades_of_freed_songs_free_download_mp3k3fos.pdfIn PDF document text
    • http://sizoxuk.22web.org/badrinath_movie_video_song_hd.pdfIn PDF document text
    • http://taxokijoba.sportsontheweb.net/shl_logical_reasoning_test_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_6026867c58a76.pdfIn PDF document text
    • http://kogowetek.getenjoyment.net/how_to_convert_j_mol_k_to_j_g_c.pdfIn PDF document text
    • http://floradoma.net/badrinath_movie_tamil_dubbedrdryk.pdfIn PDF document text
    • http://bestunew.xyz/widokovupxgofc.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/why_spring_boot_is_betterpussi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412583/normal_6029db10d59c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468268/normal_5fddfe395b47b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://femolejo.epizy.com/invoice_template_excel_spreadsheet.pdfIn PDF document text
    • http://fisiroxeriwew.rf.gd/divina_commedia_testo_integrale.pdfIn PDF document text
    • http://mafolizol.rf.gd/game_of_thrones_complete_book_series.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/how_to_replace_switch_on_kitchenaid_mixer.pdfIn PDF document text
    • http://relumewamamit.rf.gd/cancionero_popular_argentino_letras_y_acordes.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_off000146d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146D9 5204 bytes
SHA-256: 6dcfe965dc0ba2a23de0f151fb300e994deecdf945d8f48655e4766bf952281c
font_01_sfnt_off000158b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158B4 10512 bytes
SHA-256: 2b651ae0a403d6d38e0e442947864c436b0f341b6960cc864ca4d8f7ca9ec50e

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