Malicious PDF — malware analysis report

Static analysis result for SHA-256 a147655f46b565e9…

MALICIOUS

PDF

68.6 KB Created: 2021-02-16 11:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 823e932f723974eb943bbd8944a181f4 SHA-1: e23e20b2ef122faa86156db1594bd9c9561179bc SHA-256: a147655f46b565e9cdc9511b31a729769a612cb44ca883ebff6228ff46d09acc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://jottigo.ru/wix?keyword=after+we+fell+pdf+stop PDF link annotation
    • http://skameyki.club/wellbutrin_xl_dosing_guidelinesnietd.pdfIn PDF document text
    • http://pressit.space/rewigefaler9j3p4.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/86Xgcia/saderat_bank_tashkent_electronic_banking.pdfIn PDF document text
    • http://converstarget.ru/audit_report_of_infosys_company7g8k1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455390/normal_5fe8f659350ff.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/ecpEjg3/13668048997.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/gIjd1hd/free_crossword_puzzle_apps_for_iphone.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/bezutu/snake_off_game_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/cardinal_newman_high_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/chrome_devtools_content.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/77040377701.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/texeduxu.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/commandos_strike_force_ps2_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/past_simple_irregular_verbs_test.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_off0000d248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD248 4904 bytes
SHA-256: 3b6f3b948e9a17529d8a3bcb4dba5b24320de6a2a65bd2dd72eedb90a1590eb7
font_01_sfnt_off0000e320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE320 10148 bytes
SHA-256: 82ca977682c3b87b4b6c1b83124476222c723a91a91b3d1f7bdd401aa58bf9ec