Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c707a3e5a1fc090…

MALICIOUS

PDF

71.9 KB Created: 2021-02-28 12:47:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2ec8fc319527a3e5b66021787917285b SHA-1: d095fc79aa618f9019084d92af31af8ffd9cf3e0 SHA-256: 7c707a3e5a1fc090a99990082aedf841fdbb2d2c8cff231cab43bcdbafe13a69
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://baarspo.ru/strik?utm_term=python+for+loop+list+comprehension+performance PDF link annotation
    • http://mybiol.site/36092517859m6aic.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/6ih9hbT/ferijipuvirowujaloma.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/9qRibjc/kingdom_hearts_u_dark_road.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/qicjeIr/jokodeki.pdfIn PDF document text
    • http://bazis-rostov.com/tony_hawk_s_skate_jam_apk5ei2f.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/fbjbhgF/easy_recharge_jio_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/fgjgz3k/powitinamuxepoguxodogod.pdfIn PDF document text
    • http://vejobazure.22web.org/video_converter_hd_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rowazazapa/mhdgepr/islands_of_adventure_quick_service_restaurants.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/giMijia/9351896635.pdfIn PDF document text
    • https://cdn.sqhk.co/babakobesuxe/Bvaoibe/femiwimefeluwavufufapukip.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/jf8hcig/fast_music_player_bass_booster_for_pc.pdfIn PDF document text
    • http://motivawka.online/wujexavixerifebusenqkcd.pdfIn PDF document text
    • https://cdn.sqhk.co/naxaroja/bhbxhcH/xojanoxududilofebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wiwokijage.rf.gd/linoko.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_off0000dc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC94 5360 bytes
SHA-256: 9edfabcb9f87391fbe89d3384235987e71951c3820b3b1fa9a9abddccab832af
font_01_sfnt_off0000eeab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAB 10548 bytes
SHA-256: 020b8025c1c990685f4e1752ae0ef0df02e11169393b3a5d00cd80121290763d