Malicious PDF — malware analysis report

Static analysis result for SHA-256 11fd89729461cccc…

MALICIOUS

PDF

68.1 KB Created: 2021-03-01 08:10:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ac77ab3677859dfc39b07e42f1486942 SHA-1: 076f6947d1872d11627ef99490d1dc0d01ef6179 SHA-256: 11fd89729461ccccece6027a2e338bc9e518e5b2a70c9ac5aa17cc7054379c09
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/aws?utm_term=economics+of+development+perkins+6th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/wosepimi/fDLggZ8/school_management_system_project.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_602b3c37e07f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367642/normal_6006ac488cff3.pdfIn PDF document text
    • http://wevibakudibu.iblogger.org/how_much_do_foster_carers_get_paid_in_south_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/dia1kXr/vintage_hamilton_beach_milkshake_maker_recipes.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/Vviajbf/xokozonevawulibarigifose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/visual_studio_2015_tutorial_for_beginners.pdfIn PDF document text
    • http://gumelojapa.epizy.com/how_to_add_hp_deskjet_3050_to_wireless_network.pdfIn PDF document text
    • http://vizulubafaxal.epizy.com/4th_grade_common_core_standards_math_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/9117977788.pdfIn PDF document text
    • http://gizufaw.epizy.com/navy_eval_manual.pdfIn PDF document text
    • http://lopunison.rf.gd/64617131085.pdfIn PDF document text
    • http://zunedolu.rf.gd/carboxylic_acid_to_alcohol_chemguide.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/2018_hd_movie_tamilrockers._co.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/busawopibeg.pdfIn PDF document text
    • http://dupikupujetilu.rf.gd/spotify_android_apk_free.pdfIn PDF document text
    • http://zisunajupanege.rf.gd/97549352068.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/john_deere_gator_parts_lookup.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_off0000cdce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCE 5420 bytes
SHA-256: 3e689f81a57cb9f01bde039e65a8e37033246cc9bf77d8013932e5013e244367
font_01_sfnt_off0000e025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE025 10308 bytes
SHA-256: 7c47afeac8fd6fcae6571e79d35fead1f71d9197e9012760e96651136a6546a6