Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd7ce7a2cc21ea0…

MALICIOUS

PDF

75.5 KB Created: 2021-03-28 10:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9b4c8625d677c37d654a1cb7f992f095 SHA-1: 1ae63033da03574a3bb4ab849f8f7ecc9df972c5 SHA-256: fdd7ce7a2cc21ea0df2385ed0cc2f00116ddc8268a9b227b9dd3aec156860761
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate the document's purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/123?utm_term=vegetarian+cannibal++movie PDF link annotation
    • https://cdn.sqhk.co/notizejamebo/ib6yUjf/wordhero_best_word_finding_puzzle_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopiroxab/45igjj7/buy_bouncy_ball_online.pdfIn PDF document text
    • https://cdn.sqhk.co/bowevuva/jphaih1/fuvamejizikuminosid.pdfIn PDF document text
    • http://pl50off.info/49909341523jsmqw.pdfIn PDF document text
    • http://nebemor.mywebcommunity.org/cuanto_son_100_m_en_pulgadas.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/Fhd6eUK/11041111957.pdfIn PDF document text
    • http://lassituda.online/rusimdrfps.pdfIn PDF document text
    • https://xupodidif.weebly.com/uploads/1/3/0/7/130739682/fosujedefuti-wozixifirubu.pdfIn PDF document text
    • http://redita.fun/futuvaderofuvemusospzjbh.pdfIn PDF document text
    • http://allroadkamchatka.ru/dds_discount_near_me_hiringn8d1u.pdfIn PDF document text
    • http://pek-24.cc/canon_rebel_t3i_specs6kdkt.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/Thahbjc/zig_zag_lines_in_vision_and_headache.pdfIn PDF document text
    • https://sikefenuvip.weebly.com/uploads/1/3/4/0/134012601/situki.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/3_day_split_workout_routine_for_mass.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sevuxomodo.epizy.com/noturova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5be94a-02f4-4102-ae4a-f7f4a1f30fed/normal_distribution_table_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a6f8cc-acd0-4c4a-a4e0-3b08ce66a6eb/bible_study_and_home_cell_guide_2020_twi.pdfIn PDF document text
    • http://dipusoxitiruvu.rf.gd/abide_with_me_piano.pdfIn PDF document text
    • http://doxokalisawe.myartsonline.com/71124127003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e523631-f023-40e8-ab35-c499ca929bc4/jolosopigukugibugiful.pdfIn PDF document text
    • http://dikiboxexoginag.epizy.com/vabidabobedanuseja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85ba29e-38b9-4c0b-b714-7e4f00d3beb8/livuveviwagupavogo.pdfIn PDF document text
    • http://nononulavojiki.myartsonline.com/46203895374.pdfIn PDF document text
    • http://xikisefux.epizy.com/bang_bang_movie_songs_free_webmusic._in.pdfIn PDF document text
    • http://beduxuluwuniva.rf.gd/biscuit_cookie_and_cracker_production.pdfIn PDF document text
    • https://medlineplus.gov/recipes/vegetarian/In 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_off0000ead9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 5108 bytes
SHA-256: c218617a87a53de2df18b9da2a55f6be0770d55151ecef36c8bf795e6a994c4e
font_01_sfnt_off0000fc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC36 10532 bytes
SHA-256: f5ae5219c80bdb3c109101384c9c2cbca3e2e7df2d41d0e1dc7573a40bc00c05

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