Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80c994bdf704f93…

MALICIOUS

PDF

77.1 KB Created: 2021-02-23 05:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9adb0d48408e889aded87d8a0fe1855d SHA-1: b0195d5424cd9150c6a9b51b8a96932ce72e7ed4 SHA-256: d80c994bdf704f930f755ca401f7dfb89c8578277e90d85a588fb112e3d95984
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://jacksth.ru/aws?utm_term=wrath+of+the+righteous+demon%2527s+heresy+pdf PDF link annotation
    • https://fedonofawok.weebly.com/uploads/1/3/4/8/134881994/rewod.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwosowo/YicJge0/ledoditisanunuzidogolede.pdfIn PDF document text
    • https://wimofitadaxota.weebly.com/uploads/1/3/4/3/134362004/980d28ef1d1936c.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/jjcifjg/sheetrock_experts_mn.pdfIn PDF document text
    • http://zatizoxitosake.22web.org/navy_officer_recruiting_station_baltimore.pdfIn PDF document text
    • https://cdn.sqhk.co/lakivasulis/uKig3ji/republique_dominicaine_voyageurs_du_monde.pdfIn PDF document text
    • https://zudejuzire.weebly.com/uploads/1/3/2/6/132681250/1594571.pdfIn PDF document text
    • https://cdn.sqhk.co/sisamide/Fhbjcih/walmart_grocery_delivery_homefree.pdfIn PDF document text
    • https://cdn.sqhk.co/lirebirab/0ig8hf7/emergency_dental_omaha_medicaid.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/vobuturinivi/34725554089.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/android_one_vs_miui_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/simple_html_dashboard_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/gipemo.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/jisezama.pdfIn PDF document text
    • http://labazesunug.epizy.com/brother_pt-d200_vs_pt-d210.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/93394994765.pdfIn PDF document text
    • http://tawenaxogiminax.epizy.com/younow_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/bluestacks_2_free_utorrent.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_off0000f199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF199 5572 bytes
SHA-256: e5d50e32a0b53891ba37475103876fba47488d69337fef857a72680bbde28b32
font_01_sfnt_off00010486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10486 10176 bytes
SHA-256: a05993c1fb1f3d25125efe151dd115b7fe8077346b3cb6a379d49abd51177583

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