Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f5089805746614…

MALICIOUS

PDF

76.7 KB Created: 2021-03-29 06:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 87705f60aeb9fe2756ea0613f5b1880a SHA-1: d78528c77064c20dcac4f89008a36a2c7ab2b96e SHA-256: 01f5089805746614d1df215f21fc545847edd7aae52adfad3e64be95ce2a2996
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 likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of external links and the nature of the heuristics point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/award?keyword=diaguitas+calchaquies+pdf PDF link annotation
    • http://latujor.22web.org/the_iliad_original_text.pdfIn PDF document text
    • https://cdn.sqhk.co/megilujij/beighia/calculator_apps_download_for_mobile_jio.pdfIn PDF document text
    • https://niladomawinur.weebly.com/uploads/1/3/4/8/134875702/0bb1f0f61d7bf.pdfIn PDF document text
    • http://pubgmobiie.com/engageny_geometry_module_23x2kx.pdfIn PDF document text
    • http://xsale.trade/xifokarogogipi4t3k.pdfIn PDF document text
    • http://jukojadijomefar.medianewsonline.com/applied_linguistics_journal_articles.pdfIn PDF document text
    • https://sexedevojaboto.weebly.com/uploads/1/3/2/6/132695366/baxifitijaxifos-levezaf-rafupe-gepokuxu.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/whatsapp_apk_mod_2017raczi.pdfIn PDF document text
    • http://jopkapopka.online/department_of_state_human_rights_report_honduraskudf0.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/43222994366.pdfIn PDF document text
    • http://kexumojazo.mypressonline.com/rizovuvudivakigakalok.pdfIn PDF document text
    • https://cdn.sqhk.co/bamikalagov/gd86pa6/daily_behavior_checklist_for_autistic_students.pdfIn PDF document text
    • https://xilamebi.weebly.com/uploads/1/3/4/5/134598653/radededututefi-giwekulupo.pdfIn PDF document text
    • https://cdn.sqhk.co/vomawoko/cif8viV/5414352288.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/d4Lgdf8/sonic_adventure_2_gamecube_save_file.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/bashaha/liverpool_echo_breaking_news_twitter.pdfIn PDF document text
    • http://susasami.22web.org/bonikitiv.pdfIn PDF document text
    • https://waxujonugo.weebly.com/uploads/1/3/1/8/131871493/2720122.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/microsoft_sculpt_ergonomic_keyboard_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xabetalofel.epizy.com/tolaxepivife.pdfIn PDF document text
    • http://mujasanowagug.epizy.com/63207470555.pdfIn PDF document text
    • http://tudutov.rf.gd/is_class_b_cdl_test_hard.pdfIn PDF document text
    • http://lusiromipu.epizy.com/didexagova.pdfIn PDF document text
    • http://boterafozove.rf.gd/bahut_aayi_gayi_yaadein_song_lyrics.pdfIn PDF document text
    • http://vurosija.epizy.com/pukopesor.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_off0000ebe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE9 5448 bytes
SHA-256: c1b4b5c5e47b409d83c2683f8949c37510493af9e773783be633cedc389de7b4
font_01_sfnt_off0000fe73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE73 11884 bytes
SHA-256: 5734e307797bbed69f25066fcbf7eaa23ca15075f9bb694cb4928925445746f2

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