Malicious PDF — malware analysis report

Static analysis result for SHA-256 381ea818f2bc3f6d…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 01:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: de285104c4ae28f65239b3888ec44baf SHA-1: e66f0296860e431968cd0410ccafc575f65a050b SHA-256: 381ea818f2bc3f6dd31971b970933b198248126c818a4a1a33be271ada3d7af9
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/award?keyword=insinkerator+disposal+parts PDF link annotation
    • https://cdn.sqhk.co/miviterul/ajcggYi/12956409897.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/x67ghic/linetow.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/nisexadogiripopopajer.pdfIn PDF document text
    • https://cdn.sqhk.co/josozudibud/hh6nxhY/59782442267.pdfIn PDF document text
    • https://cdn.sqhk.co/foxezevewa/dY90ja1/london_nfl_football_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jisogixij/gcihgeX/fiji_airways_a350_business_class_review.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/dA0gghe/lemonade_recipes_for_one.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/fewunadupop/rejav.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/nemuxininulakajinujet.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/mofunanoxasisovepa.pdfIn PDF document text
    • http://funijapubuf.rf.gd/penn_logo_svg.pdfIn PDF document text
    • http://gagafexekoxoseb.epizy.com/92116546100.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/life_is_strange_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/counter_strike_go_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/38797627607.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_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 4952 bytes
SHA-256: 452e499c8d458c6d341c547d7317f73a7a22c9e9c5a290c0fe194a597e932325
font_01_sfnt_off0000f1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 11096 bytes
SHA-256: 4cbfd2f703a3499096ed92f218b5c2ee283a7d19a693c312aa925b4257bc942a