Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94c009432980953…

MALICIOUS

PDF

64.6 KB Created: 2021-02-09 06:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 87077a57a01a6cf68741e1ee6eec3b49 SHA-1: b115af112df19a112ad1ea346044c307a929b408 SHA-256: c94c009432980953a31d2b0159619e751091411d5726b420fd87339ed6ae03d4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://leonvi.ru/123?utm_term=supra+mayro+kratt+scratch PDF link annotation
    • https://cdn.sqhk.co/vaminika/MwI0hcd/academy_awards_2021_cancelled.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/cQC1W3l/build_order_strategy_aoe2.pdfIn PDF document text
    • http://titanovyi-filtr.ru/solucionario_matematicas_1_bachillerato_bruC3B1o6k3na.pdfIn PDF document text
    • http://trujillostacoshop.com/android_1_mod_apk_tank_starsvqvd0.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/gedexim/95601821187.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/1664844084.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/aiims_raipur_staff_nurse_exam_answer_key.pdfIn PDF document text
    • http://masesererevitug.epizy.com/apkreal_spotify_offline_er.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/cbre_group_inc_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/bivasewagarisazom.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/big_w_flannelette_sheets_sets.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/pikafes.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/vobazofewa.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/bluestacks_for_macbook_air.pdfIn PDF document text
    • http://roranirit.epizy.com/irish_washerwoman_flute_sheet_music.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_off0000c408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC408 5408 bytes
SHA-256: 5c45c71e501e55b5d9ec2226f79124263a463c761c32a794fe00f94658acb4ee
font_01_sfnt_off0000d64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64C 9248 bytes
SHA-256: 5b33736d4a931480558acd6064a5066827954cff465550bf84eb5a024619a9ec