Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79cbf6c3e40cf4f…

MALICIOUS

PDF

72.0 KB Created: 2021-02-18 06:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3c6459b7c823c4c7a7c105b5e38c3f76 SHA-1: 239cb3cc75416db8ba41bfe605e93a0e4c4ccf20 SHA-256: e79cbf6c3e40cf4f0a6416c28dbd29486e8f6107bd9ee7f4fbebd09d0acbaf1e
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://maypoin.ru/wix?keyword=halley%2527s+bible+handbook+pdf+download PDF link annotation
    • https://cdn.sqhk.co/merojuniv/3EoAGji/jetaudio_hd_music_player_plus_full_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/gh6MVGd/vemalemabezubinaditirirom.pdfIn PDF document text
    • https://cdn.sqhk.co/galudubujuwa/igcaCDK/fixoxafekunidegupomepefox.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/cMjbgjg/amtrak_auto_train_sleeper_car_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/jivuzukop/Wjgrdgd/save_the_girl_mod_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/1O9Uijx/tigofivijodiboradine.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/haHQJSm/olvidarse_gerundio_espanol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418746/normal_5fe1240ec0c94.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/giSjjrD/basketball_arcade_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/gBGU38a/arknights_twitter_kr.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/zafibimutadoti/weather_report_big_bear_mountain_ca.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/pokemon_go_rocket_grunt_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/refurbished_at_t_android_phones_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/canopy_python_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/puzoxuraxinuwuvesun.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/multi_barcode_generator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/epic_seven_10-_10_guide_reddit.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_off0000dda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA6 5428 bytes
SHA-256: 3ce270d69fa578a7afb15abed8d4f76c0c5877584c8be4c04de7fa6fe466ee7c
font_01_sfnt_off0000f030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 10092 bytes
SHA-256: 4c887ec54996049bd2cdce8351279f9216257e0f588f0f8196fe12ab770d0c21