Malicious PDF — malware analysis report

Static analysis result for SHA-256 62f1204f957f9730…

MALICIOUS

PDF

72.3 KB Created: 2021-02-06 13:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9dc9318f9b16d3ec9df42eaa4c6dcf7e SHA-1: 261f03f4c459ef88e7433caf58b6ff04417890dc SHA-256: 62f1204f957f9730fa0ddf331d1183019123041b9054b550dc6634edfb8429e6
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=promised+land+movie+parents+guide PDF link annotation
    • https://gunagabivap.weebly.com/uploads/1/3/4/8/134863042/398675.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/Xhg3OHG/smart_watch_connect_to_apple.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/drkjaNx/62204728443.pdfIn PDF document text
    • https://bosijoputa.weebly.com/uploads/1/3/4/3/134317673/sanavu_zudejexos.pdfIn PDF document text
    • https://cdn.sqhk.co/mixenezir/jgfhexs/63800651033.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/hcY4JB4/roreki.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/ja80ghw/best_first_person_shooter_2020_xbox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5fd8122f3d130.pdfIn PDF document text
    • https://miwijefovutifim.weebly.com/uploads/1/3/5/3/135316182/wumavavavofixesigu.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/hacqtv1/faxujati.pdfIn PDF document text
    • https://ketabanajav.weebly.com/uploads/1/3/4/7/134707818/bac01.pdfIn PDF document text
    • https://cdn.sqhk.co/filovixedalu/KsigVBe/3d_barber_shop_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/jcSlA8F/pesepibebesalim.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/cBqyji5/zewipewojobasenuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/lewoxiguj/idskniw/5305545256.pdfIn PDF document text
    • https://cdn.sqhk.co/jarebomu/hhWLjfb/90980779533.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446379/normal_5fc99df3225e2.pdfIn PDF document text
    • https://cdn.sqhk.co/tumexifukevu/njciMhj/ruzzle_puzzle_solver.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ddcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCD 5340 bytes
SHA-256: d4b6f054ad3bc561454cdde049fe91c0077e61040ed6f64bf4401757401105e6
font_01_sfnt_off0000efe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE6 10672 bytes
SHA-256: e2a68b24cd4fccb9d94510bc8693557c39f0b405981752281f7e73f1e8c0e211

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