Malicious PDF — malware analysis report

Static analysis result for SHA-256 77976c939693d37c…

MALICIOUS

PDF

70.8 KB Created: 2021-02-24 03:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8544a2aeab59b9c769371731f0c9ec1e SHA-1: 583fe57b85bae9c73733e7d3b2d5b16b673b1b61 SHA-256: 77976c939693d37cb589372b4e32b5fe1b3918cdef7dd554a19d1ae8b50fcc7e
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://baarspo.ru/wix?keyword=the+complete+guide+to+even+more+vegan+food+substitutions PDF link annotation
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/nanirid-xakakif-voser.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/ihhaNii/kokoluzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370744/normal_5ffda9b7e183a.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/android_studio_tool_window_logcat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408858/normal_603114154e47c.pdfIn PDF document text
    • https://gaturipagi.weebly.com/uploads/1/3/0/7/130739573/0d2948.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/gjgjdMq/adobe_photoshop_camera_app_ios.pdfIn PDF document text
    • http://nemeloru.66ghz.com/alien_dance_song_mr_jatt.pdfIn PDF document text
    • https://misekijenag.weebly.com/uploads/1/3/1/3/131380320/2e3773a9e629.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/giaXgea/phone_call_blocker_app_android_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bezopiwuzalobit.rf.gd/bot_twitter_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/nororuvilisobit.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/j7_prime_2_atualizao_android_9.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/44667704661.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/police_car_simulator_game_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/kofolabiluguboluwukafaruf.pdfIn PDF document text
    • http://tuzekejaxegis.epizy.com/65596089764.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_off0000d783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD783 5716 bytes
SHA-256: 24d72304e8a2b70e5558974e9f1d89105fb56bb3a3b24d43f7ab755450919d55
font_01_sfnt_off0000eacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACD 10536 bytes
SHA-256: 8f69a97114aed97f90029ae3ed43b00c385e6eb52fa139fb954f485f64fff83e