Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d96220dc41e1c92…

MALICIOUS

PDF

72.6 KB Created: 2021-02-06 20:24:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: daa29ff6fd2bca3a6c511b5bcb3d240e SHA-1: 35e6fba3cb4c295233cdd20f3b02fcc8230161ae SHA-256: 1d96220dc41e1c9268f75605237a0ea1563f002ece1cb5d09a803dd4c1ca9c8c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=why%20is%20my%20netflix%20%20queued PDF link annotation
    • http://varuvoruva.iblogger.org/8933371132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463262/normal_5ffe9c348be45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366063/normal_5fcba8aa7f079.pdfIn PDF document text
    • https://cdn.sqhk.co/lutadamafe/EtifiW2/ufc_fight_island_4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367680/normal_5ff3b9992761c.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/ghrscjc/bijezetuxokoferez.pdfIn PDF document text
    • http://vivofuma.66ghz.com/faxotipulinasilerafojaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444882/normal_600202cc42565.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/robafidawa_barawitisar.pdfIn PDF document text
    • http://tolujupa.22web.org/8203508386.pdfIn PDF document text
    • https://cdn.sqhk.co/vopokemib/jdhdBge/jewebil.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/Thbjjjd/download_todoist_windows_10.pdfIn PDF document text
    • https://gimoxawoja.weebly.com/uploads/1/3/1/3/131380550/5331122.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kanusilos.epizy.com/chuyn_t_sang_file_nh.pdfIn PDF document text
    • http://jiwenufaxo.epizy.com/annadata_bengali_full_movie_3gp.pdfIn PDF document text
    • http://rasunafosav.epizy.com/powefolo.pdfIn PDF document text
    • http://xekibedeba.rf.gd/jozaganidamegodavotuxi.pdfIn PDF document text
    • http://lakobomupixa.epizy.com/happy_birthday_to_me_gif_video.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_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 5148 bytes
SHA-256: 88231492d47b2004a7f464f46e6d0dd998d8a5866e964206885dfd2f4775bb6b
font_01_sfnt_off0000eede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDE 11592 bytes
SHA-256: 83f931a15007c91111554d4812935bf85b8c1483d43b2c8e8c58b58afc2b93b4

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