Malicious PDF — malware analysis report

Static analysis result for SHA-256 9094c6bbd47bbb67…

MALICIOUS

PDF

107.1 KB Created: 2021-03-20 07:28:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a466789594efb25183e74fb705fc3e94 SHA-1: c225269bf8c1bfdbd96749aa521471d5a7872098 SHA-256: 9094c6bbd47bbb675ca73c42aaf6ac4c51ec9a4eca99ce3d1315d9e39651c8e9
134 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to obscure the true destination. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple URLs suggests an attempt to redirect the user to a site that offers a download, potentially disguised as a movie file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/123?utm_term=dushman+1998+full+movie++hd PDF link annotation
    • http://urolog.xyz/how_does_justice_help_societyuxwzu.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekata/S1ijghv/bingo_game_set_near_me.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/learn_how_to_code_with_scratch.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/2jj8ibr/crazy_summer_food_making_game.pdfIn PDF document text
    • http://my-favshopc.online/sevojufujenusojumcehtp.pdfIn PDF document text
    • http://haustova.com/92170829116vh969.pdfIn PDF document text
    • http://freedate18.xyz/34630915783unpnk.pdfIn PDF document text
    • http://baby-slings.ru/kovexederegerukiropifaber5y7jg.pdfIn PDF document text
    • http://tinipen.medianewsonline.com/10334833829.pdfIn PDF document text
    • https://cdn.sqhk.co/xogixute/a7aoXuc/recargar_celular_a_cuba.pdfIn PDF document text
    • https://cdn.sqhk.co/gajeneset/rgjSfid/94558493863.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/10463945470.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/molakigenegigebawaba.pdfIn PDF document text
    • http://kameregeperiwaz.22web.org/hp_officejet_pro_8500a_alignment_failed.pdfIn PDF document text
    • https://cdn.sqhk.co/duxajoje/TifjdUK/disney_princess_my_fairytale_adventure_pc_game.pdfIn PDF document text
    • http://lejifip.sportsontheweb.net/technical_support_engineer_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/23964089036.pdfIn PDF document text
    • http://kipejefanowisu.atwebpages.com/administracion_publica_desconcentrada.pdfIn PDF document text
    • http://visugog.myartsonline.com/circle_area_circumference.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_6424f87947324218a6e3fda86706894e.pdf?index=trueIn PDF document text
    • http://foxukekamusun.onlinewebshop.net/beats_solo_3_manual.pdfIn PDF document text
    • https://d920bd67-dfaf-4c99-85b0-fcb8118dfb91.filesusr.com/ugd/383849_761df0362f474742a8a5a531515d646b.pdf?index=trueIn PDF document text
    • http://bixerexexotepe.rf.gd/67269955349.pdfIn PDF document text
    • https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_09e768e071174134a64357e44502958d.pdf?index=trueIn PDF document text
    • http://vedelobezab.rf.gd/ramafarokise.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FBC 5512 bytes
SHA-256: b40cd30bf1e6b7c1e4d8e5b5bbd188dc3a56c1085be1a8bd3d221405c4632089
font_01_sfnt_off0001525e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1525E 4488 bytes
SHA-256: 5555aaab1659d37f286c2ec4e53f592f204852e644abcb65b324fb4e4017055d
font_02_sfnt_off00015e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E87 12576 bytes
SHA-256: 6257a65bbc608ebcca03dcb17b6063ff173778bc1f3867a820381ff07fda7e48
font_03_sfnt_off000188e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188E7 16168 bytes
SHA-256: bba2deab2d1bf5fec42a59c7cec6b532315bbf74c5dd01faed2b9768755292e5

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