Malicious PDF — malware analysis report

Static analysis result for SHA-256 908b8a70394ee539…

MALICIOUS

PDF

90.1 KB Created: 2021-02-08 22:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f6f35582b7b3fa4a5a8c38a18fd7a568 SHA-1: 1db5b7947c31b2edb54f511908d0b1a01193abc7 SHA-256: 908b8a70394ee5398f0fdafe71ab94913ef8ad1e7443b93ade248f27d9fd35f8
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=corolla+verso+repair+manual In PDF document text
    • http://kprovk.xyz/learning_spanish_beginners_videosf9ry2.pdfIn PDF document text
    • http://tanijosek.22web.org/machine_service_report_format_in_word.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/Y96VayZ/simple_drums_rock_realistic_drum_simulator.pdfIn PDF document text
    • http://fuwenosod.iblogger.org/53939501726.pdfIn PDF document text
    • https://cdn.sqhk.co/xugikokazo/gjf2tKb/motogp_final_standings_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fofasafiwi/jbTSjhh/95346464214.pdfIn PDF document text
    • http://pubggaming.online/word_crush_level_1331wpnqj.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/hUijihb/one_time_top_up_electric_ireland.pdfIn PDF document text
    • http://zejenaxudemato.22web.org/bundesliga_schedule.pdfIn PDF document text
    • http://vurenosul.22web.org/aneurisma_aorta_toracica.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotenax.rf.gd/funny_meme_template_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/kemusogomusizunokogukivi.pdfIn PDF document text
    • http://biwipekimati.rf.gd/88043411383.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/carlos_gardel_biografia.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/bhagwa_rang_song_dj_jagat_raj.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/xuvogivawanoku.pdfIn PDF document text
    • http://vezoxonu.epizy.com/dynasty_warriors_unleashed_campaign_guide.pdfIn PDF document text
    • http://wowimes.epizy.com/dnd_5e_moon_druid_wild_shape_guide.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_off00012234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12234 4932 bytes
SHA-256: 0be714a69d023e5c409d5185ed65b253ef18059543bdc3d8f0fcf6999181e730
font_01_sfnt_off000132e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132E3 12212 bytes
SHA-256: feb675c1a8ce8615cd038e90bc90b132e9fdcf289f08c42a53275c825c359bc0