Malicious PDF — malware analysis report

Static analysis result for SHA-256 46915d2d2772b67e…

MALICIOUS

PDF

132.8 KB Created: 2021-03-21 11:35:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0713c537023bdc925c8bfd0e6de166a5 SHA-1: 66d4d69f03e4039738cf4c99992ad1e9169400b0 SHA-256: 46915d2d2772b67e0b0da8f46b603c66d86e83949767e43538e76eb4ff19810a
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://vilenefex.ru/award?keyword=bharata+muni+natyashastra+pdf PDF link annotation
    • http://napodosawukezob.getenjoyment.net/quotes_from_the_book_speak_by_laurie_halse_anderson_with_page_numbers.pdfIn PDF document text
    • http://dakajak.medianewsonline.com/zemesofaginebuniji.pdfIn PDF document text
    • http://vivadoctor.ru/how_to_calculate_irr_hp_10biizn9wh.pdfIn PDF document text
    • http://manovina.mypressonline.com/los_agentes_economicos.pdfIn PDF document text
    • http://mesikigodijope.mypressonline.com/movume.pdfIn PDF document text
    • http://begemotiks.space/samsung_j727a_root_file_download_sitv40z3.pdfIn PDF document text
    • http://liwadaxezaf.getenjoyment.net/nedavajolujem.pdfIn PDF document text
    • http://smartcreditcheck.info/how_do_i_get_free_spotify_as_a_starbucks_partnero1jw1.pdfIn PDF document text
    • http://vosojivaru.mypressonline.com/94971625046.pdfIn PDF document text
    • http://setofexperience.site/vampire_diaries_cast_snapchat_names4olec.pdfIn PDF document text
    • http://mon-compte-cmb.best/tft_set_4_warlord_spatulaaiucc.pdfIn PDF document text
    • http://leftoutclub.com/37773292938pcgjf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://saxodanokijaj.atwebpages.com/81254319528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f742cb7-c060-41ec-a5ed-c1896583bd88/do_clary_and_jace_end_up_together_in_city_of_heavenly_fire.pdfIn PDF document text
    • https://e192e36c-395d-4660-9df6-aa7aed00c30a.filesusr.com/ugd/3aee12_bb6ad9bc08ed43e4a712f2448736a4b8.pdf?index=trueIn PDF document text
    • http://suzifoki.myartsonline.com/coaching_ontologico.pdfIn PDF document text
    • https://c6111751-42b6-464f-a8b1-832d492ff999.filesusr.com/ugd/3d0627_843d00bb69ed4420a5ebedf31158fd64.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/065ea0e0-3275-4841-8ddf-e37ba18305ab/69820382054.pdfIn PDF document text
    • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_402ac043bb904d11919fff7b2f1a0d8f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a634f11f-2c80-4de4-aedc-c57abba5cb1d/88663411964.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A9D 5400 bytes
SHA-256: a46e2822d031c26bb9486f8320068cc701c3a69f598443a6351edfb335a63132
font_01_sfnt_off00019cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19CD6 3772 bytes
SHA-256: 9389eabb5da0f7ff5893e499ff791b47d46466a46589dcf6e6727fbd9e34bd63
font_02_sfnt_off0001a87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A87C 13656 bytes
SHA-256: 20b6489ddfd76a8cd645cbc8a4bb9c2b0474b0e787ae61ed6b7aaf92fc5a7ae4
font_03_sfnt_off0001d296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D296 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd
font_04_sfnt_off0001e7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E7BA 8328 bytes
SHA-256: 6b391ced69b4da6a9870bb9384e6f5ecf8b5f8fb424168ae9adda950a27164c2