Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ece8d187898a9c…

MALICIOUS

PDF

72.5 KB Created: 2021-02-19 02:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bebffb5aba3286a319a71f26076573f4 SHA-1: cb1b57fe0c67455c3ff0f1a42719d8913467308d SHA-256: 89ece8d187898a9cb8e792cab07fe55478d52356175d7e54c710b1ea04a35731
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=malwarebytes+3.5+1+premium+key+reddit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424013/normal_6001b7d670976.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/hiSViii/80824056518.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/Hifxmgd/free_downloadable_monthly_calendar_templates.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_6009db809e882.pdfIn PDF document text
    • https://cdn.sqhk.co/ponesigis/aYlija8/gululunuwaxusexegabub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448545/normal_5fdbc31a860ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_5ffd39dad89de.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/iijb057/pulse_point_app_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459027/normal_600c9859e282e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379230/normal_5ff0009fe2d83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417814/normal_6001038963aec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454043/normal_60074a576945e.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/moduluzuxikari/platform_toolset_v110_not_installed.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/97691726528.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/97085772530.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/13282898621.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/venolymphatic_malformation_icd_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/android_butterknife_fragment.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/chinese_language_lessons.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/59470956511.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_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 5880 bytes
SHA-256: 3000bffd2fe7db8bd755ee0a1280a5bde6f8998dbaffaa5cc1b4aa78cffbfb32
font_01_sfnt_off0000f129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF129 10220 bytes
SHA-256: 10a844b2a56f7200a22a55dc0dfc4f8dab2b800a0904fb20a4ab794c5727f2da

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