Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2f2bddbe4b7af8…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 02:59:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6d5e26b5ab1a6df80956363e8a1b8466 SHA-1: 027fdf448450a4301cbb93b67bd8c644dd30bcc3 SHA-256: 5a2f2bddbe4b7af8b4bce54c23a9d1593175feba6c6fd479ffa8b6f464c56f12
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=the+cask+of+amontillado+discussion+questions+answers In PDF document text
    • http://quickpapp.online/fugue_in_d_minor_sheet_musicolkgn.pdfIn PDF document text
    • http://mini-camera-super.club/225309138113uboe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389095/normal_5fdd6a4785f66.pdfIn PDF document text
    • http://yeswins.space/angry_birds_go_mod_apk_datamqu8n.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/gnhhggF/bike_wallpaper_hd_download_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444852/normal_5fddbecc51325.pdfIn PDF document text
    • http://gufutaca6.xyz/mutikunisodt10x.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/nubikemojomiauo5i.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/gij9ifg/bingo_world_games_rio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497688/normal_6016c139dacd6.pdfIn PDF document text
    • https://cdn.sqhk.co/kajemuwasutu/jihdZ32/26377444995.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/chbhboY/virus_scan_android_phone_free.pdfIn PDF document text
    • http://xozonline.ru/the_umbrella_academy_comic_klausxwxw0.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/nonabafat/angular_5_form_select_example.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/aila_re_aila_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/23366798043.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/21714436525.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/mera_bhola_bhandari_ringtone_karen.pdfIn PDF document text
    • http://lafugigolemetuk.rf.gd/zoxejetudefavonufagag.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_off0000d8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DC 5492 bytes
SHA-256: 50df99bc3395fc276dea0e7fa656e0f086552826487455fb9d1a9e7b49eefb33
font_01_sfnt_off0000eb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6F 10124 bytes
SHA-256: 46df9e9a44ac694dcf9068a31cfda77b617a2ea23665022d28c6199d65d5560e

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