Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed1deccb613803a…

MALICIOUS

PDF

38.8 KB Created: 2020-11-08 19:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 639df113c7095f24c866313cd835e02e SHA-1: 4a4ee9fcfa113d6913e771d1c8d74236194dfb92 SHA-256: 7ed1deccb613803a032ac01a18fccc714137d14a42caf25f6a624639d6b3cf08
84 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/123?keyword=brown+girl+dreaming+pdf+online+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f870f2192180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f9b7f77901fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f871a6764d7e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3b1027-fab2-4ee8-8f31-3f0765c7ba24/bawifax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d515a2b4-6a71-4156-9adb-988bf93b3b3b/mufifogolavogatosojo.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/fizimobaruweboratiweti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472a111c-8d59-4532-9a40-682fdb67c651/jusalokorok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a175ae67-79bc-4065-bc24-0f285e850563/altar_imp_captain_summon_scroll_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ac27d56-2b99-4b3b-ad21-f09d07d8a059/55461760572.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/my_mp3_clan.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/install_apk_android.pdfIn PDF document text
    • https://rezowus.files.wordpress.com/2020/11/lijijijuwunepariz.pdfIn PDF document text
    • https://raxusurer.files.wordpress.com/2020/11/blindspot_season_4_episode_19_subtitle.pdfIn PDF document text
    • https://wupobisabud.files.wordpress.com/2020/11/align_radio_button_center_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7de2b13-83e5-47d0-8026-de7939faa912/bivijo.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_off0000597a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597A 5324 bytes
SHA-256: 0b298bf9393157cca055eca7d5091cfdf128c842b394c34171d1801dec085830
font_01_sfnt_off00006b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9B 10060 bytes
SHA-256: abfbd2f7345dfc4cfd0aa7bc647bc5723db10ca12d5d036efdc02e14031ff85a