Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda61110be98ff71…

MALICIOUS

PDF

71.8 KB Created: 2021-04-29 03:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ced6a2dbe70d27ee5f80557d30abd604 SHA-1: def6747b13704eee747e4b266b0829db36af7df8 SHA-256: cda61110be98ff711675313f3b6b103b500e382489fce66feb0b45e7143559f2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, possibly for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/strik?utm_term=craftsman+garage+door+keypad+setup
    • https://static.s123-cdn-static.com/uploads/4412902/normal_5ff1b59373446.pdf
    • https://cdn.sqhk.co/marelagixe/bEyfhiM/24997833066.pdf
    • https://cdn.sqhk.co/welosezu/jjjGRia/fox_adventure_game_online.pdf
    • https://cdn.sqhk.co/pigexebobe/Vihl3Bn/hobby_lobby_in_hartford_ct.pdf
    • https://cdn.sqhk.co/remigalakefo/5he2Bo9/sotujigasu.pdf
    • https://static.s123-cdn-static.com/uploads/4469630/normal_5fc86ab28621e.pdf
    • http://love-your-lips.online/samsung_55_inch_tv_7_seriesvc7at.pdf
    • https://cdn-cms.f-static.net/uploads/4476140/normal_60340fb9d316b.pdf
    • https://cdn-cms.f-static.net/uploads/4464869/normal_6051fc849c200.pdf
    • http://copyrightreports.com/how_to_win_uk_lotto_tipsxw9w8.pdf
    • http://itmax.info/what_fuel_does_a_stihl_blower_usept999.pdf
    • https://cdn.sqhk.co/patagarinixa/5zjhifH/universe_sandbox_free_download_mac.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b9aadecc-e902-4aa1-b2d1-0ee593120495/2007_cub_cadet_rzt_42_parts.pdf
    • https://uploads.strikinglycdn.com/files/fddad518-d286-4896-8e16-5bbf47d75ebb/how_to_do_naruto_hand_signs_fast.pdf
    • https://uploads.strikinglycdn.com/files/f18f0bcd-5805-4607-a211-5fddbb0086eb/barska_safe_battery_replacement.pdf
    • https://s3.amazonaws.com/genedonapubefe/bunep.pdf
    • https://uploads.strikinglycdn.com/files/591a0a4e-1b80-4a40-a482-acadf3df435e/are_mantles_radioactive.pdf
    • https://s3.amazonaws.com/dorobukasawituw/79101817903.pdf
    • https://uploads.strikinglycdn.com/files/e9770373-4f1f-4c19-8449-804b735f6411/27302328655.pdf
    • https://uploads.strikinglycdn.com/files/1cf6f6be-599c-47c4-bc79-047fb0d7e290/how_do_i_setup_my_brother_printer_to_print_wirelessly.pdf
    • https://s3.amazonaws.com/gofiguj/maxufiloxu.pdf
    • https://uploads.strikinglycdn.com/files/808725bc-4b59-453f-b540-c33d210e7544/pl_sql_developer_jobs_in_canada.pdf
    • https://uploads.strikinglycdn.com/files/257b158b-b2b8-4600-a167-20c0a2298266/harry_potter_book_set_in_hindi_buy.pdf
    • https://uploads.strikinglycdn.com/files/432d2f29-e5f5-4fe4-9a86-ca2bab807e86/fufava.pdf
    • https://uploads.strikinglycdn.com/files/38f73afa-5bdd-491f-9d2c-926a549546dd/percy_jackson_3_movie_watch_online_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dab0.bin
abeff5802f7d517ec3151cdececdbd158f7e880db6d2c86d37e98040ed73f2a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB0 5400 bytes
font_01_sfnt_off0000ed08.bin
bc2839dd15ec3c028e78a87ee7b959000535d3a0cd006b5a3bd8fa21c495e3f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED08 10072 bytes

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