Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0425a6477e9ca6…

MALICIOUS

PDF

81.0 KB Created: 2021-03-26 08:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2d8bea8e6dfb8a4e7c6fe9cd8efbd424 SHA-1: d3bedb544d1e127e77311da96a24ca1628ba386d SHA-256: 7d0425a6477e9ca61cd82e23b2ff3e9c3ef268ec8a9cb0a1ed2b7af93a70d22a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains a lure for downloading a file, indicated by the 'Image lure linking to an SEO redirector (free-download phishing)' heuristic. The embedded URL 'https://baarspo.ru/123?utm_term=windows+10+pro+to+usb' likely leads to a malicious download. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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://baarspo.ru/123?utm_term=windows+10+pro+to+usb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418781/normal_604fcffa4011d.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/hfDjhgi/gwent_the_witcher_card_game_trophy_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474985/normal_5fe429d51b9eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fcdf5cfd4533.pdfIn PDF document text
    • http://fiwuwoxas.22web.org/lazuzikabofiledofezudaza.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/KhgifNq/kung_fu_panda_po_dragon_warrior.pdfIn PDF document text
    • https://cdn.sqhk.co/vamunidibu/zBKBJje/dungeon_keeper_gold_level_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_60517e7a3bfac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417658/normal_60097f65789d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pasigajixivete.epizy.com/atelier_rorona_dx_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7260fd6a-5e4a-4c42-ad41-58195a817373/figabigipidiki.pdfIn PDF document text
    • http://lojupodinitaxug.epizy.com/tigumomepew.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/80570520054.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/brewmaster_monk_pve_guide_5._4._8.pdfIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_76afd56a8f4341b9a3a2018b9aee7de8.pdf?index=trueIn PDF document text
    • http://batubegirego.rf.gd/94534139354.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/anticipation_guide_for_to_kill_a_mockingbird.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/21958093778.pdfIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_f8052a1614b647e3a9334350c29b255f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d76972-bcf5-46b9-ba6b-a393c074b595/45611871885.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/94684544194.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 4916 bytes
SHA-256: 2b26167da071ba78cf6dd378c8445f7916504732be15cdad68d2e8c1dcd93d04
font_01_sfnt_off000102f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F6 10608 bytes
SHA-256: 84797675dd95e69f4f8735a07bc2f7319080654983b8e47717cc879836a8d339
font_02_sfnt_off00012728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12728 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f