Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd017abf937609b…

MALICIOUS

PDF

69.9 KB Created: 2021-02-27 14:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5f2f150aa0e76af5f68d84469dc8db9 SHA-1: 2b3c068d54963688d995044dd67395dd40eead43 SHA-256: cdd017abf937609bd3487a2da858bbd9a00659510eead94825c3e7d5adb21797
196 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
  • 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.
  • 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://fokemale.ru/award?keyword=bacaan+al+quran+30+juzuk+oleh+sheikh+mishary+rashid PDF link annotation
    • https://cdn.sqhk.co/susojitigi/zIjc9ih/virtual_table_tennis_ios_hack.pdfIn PDF document text
    • http://neuroncraft.online/fizeginoxxvd6.pdfIn PDF document text
    • https://nelejezubifub.weebly.com/uploads/1/3/1/4/131406077/cb3c0d0fa1c.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/BifUif4/tolixosat.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/DjhBjeq/device_care_apk_sammobile.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/rudimijegivoneg-laruximok-jesenasife.pdfIn PDF document text
    • https://tapebosipufadiz.weebly.com/uploads/1/3/4/3/134366988/312548e37faa.pdfIn PDF document text
    • https://cdn.sqhk.co/ronuwimo/djjHkOS/ponniyin_selvan_podcast.pdfIn PDF document text
    • http://enots.space/ninenipekumakidoxijsjix.pdfIn PDF document text
    • https://cdn.sqhk.co/bawijodol/At1fif0/auction_wars_storage_king_hack_apk.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/xisetajesamupamuxuiysw.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/kibavutibeved/home_cleaning_checklist_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/bopupedataje.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/19257741286.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/mitchell_industry_trends_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/midalexefejufamiga.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/english_learning_online_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/zifaxixow.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/65828008824.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_off0000d317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD317 5952 bytes
SHA-256: 09782e4e385cfaf435f98e25fa8ba0485fcc110aef0e1d0d02855933d8991ed2
font_01_sfnt_off0000e73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 10080 bytes
SHA-256: 4aea9f8a8c3c69b924a5bb82917fec1143a528c17f77fa3eb8a282b40e63660f

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