Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb3fdac8f37f507…

MALICIOUS

PDF

73.6 KB Created: 2021-02-24 13:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3a18c02416282ce68bb1504a30c4f8ff SHA-1: af68e232f1c8cb8eef926df4295f714c47e7bf2b SHA-256: 6bb3fdac8f37f50762f826a1762a9b7abf95f62f9eae924d90c6fb9d63c33fe5
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jottigo.ru/wb?keyword=how%20to%20tell%20the%20year%20of%20a%20winchester%20model%2094%2030-30 PDF link annotation
    • https://cdn.sqhk.co/pubamegumox/wIfhije/cartoon_network_same_art_style.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/TnoUQr9/destruction_derby_2_game.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/kshatriya_hd_wallpapereyjd1.pdfIn PDF document text
    • http://reduslim-shopofficial.site/33777236062f00yz.pdfIn PDF document text
    • http://onlineeshop24.xyz/pomigalevaminofumopefirush4f6l.pdfIn PDF document text
    • https://cdn.sqhk.co/rotuzuwibi/BG6hdxr/download_mod_game_state_of_decay.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/hjNQ9ge/breaking_bricks_with_ball_game_play_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/cgihiCb/pba_bowling_finals_2020.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/mejifavo/brainchildren_essays_on_designing_minds.pdfIn PDF document text
    • http://wimixuv.epizy.com/47235767518.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/90098590783.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/44241980872.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/88477354668.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/silence_of_the_lambs_book_reading_order.pdfIn PDF document text
    • http://gukisika.rf.gd/jipajavubebewoba.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_off0000dfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 6000 bytes
SHA-256: c4c711bfc177745e9f3a4eedd4921a26915d1edd42070d2cb9973b557fc428c8
font_01_sfnt_off0000f40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40C 10944 bytes
SHA-256: bb8dfdb2127091dc0cb8ec2b70e92a1b7fe6a2afac0a60c95aedef66469cfc2b