Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba11cec7a0961493…

MALICIOUS

PDF

71.5 KB Created: 2021-02-08 10:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ef3538bc775a4f2f58f26f0d059f9bb6 SHA-1: e3f58f81adbd68c91e134df8d866a2a15d6c33d1 SHA-256: ba11cec7a09614937bbbb17a05c32f19fe77d7941275b329e229a89d62720a52
144 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/aws?utm_term=cooperative+chemistry+laboratory+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391000/normal_5fc7c71b3c180.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/geWjqVX/wevezogubaruxanenu.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/xoturimafa-lidigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487197/normal_601b28c7cd761.pdfIn PDF document text
    • https://cdn.sqhk.co/faxinomitux/thgXiie/xbox_cold_war_open_beta_dates.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/kekabozuxu-xovitejaxitub-lofapilora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_5fe8b38f2c471.pdfIn PDF document text
    • https://kakifimetuwojo.weebly.com/uploads/1/3/4/3/134317364/835464b.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/gwRVOhi/taper_fade_black_hair_cut.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/fudosopuxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5ff1b6200d4a3.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/dufekifaral/ableton_template_maschine_jam.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/alfresco_workflow_details_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/reperejavuwajo.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/kelemixopap.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/crazy_car_racing_game_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/subject_personal_pronouns_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/girl_bestie_status.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_off0000da7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 5604 bytes
SHA-256: a49242e851c7b8ab460d224514a8b930fd37345030f9d4ff4900a2132526cfe9
font_01_sfnt_off0000ed5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5E 10396 bytes
SHA-256: 63e2d642a2c462f8c940f04aaa8991e4f5ec46d07fade0f6ee4ee6ae8d81ce0e

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