Malicious PDF — malware analysis report

Static analysis result for SHA-256 092e16c4e5d61706…

MALICIOUS

PDF

79.8 KB Created: 2021-01-19 06:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 97baef07fdae1f96e5306fda2f1e190a SHA-1: ae1fdb215109c6f039fd83254b926460605f8dbf SHA-256: 092e16c4e5d61706982bd76486689aa933557d6588cfd1f51d5efbe9bf0d8d7f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wb?keyword=vr%20headset%20math%20games PDF link annotation
    • https://site-1168171.mozfiles.com/files/1168171/winupamabuwagosijezola.pdfIn PDF document text
    • https://site-1179801.mozfiles.com/files/1179801/tugokoziwewov.pdfIn PDF document text
    • https://cdn.sqhk.co/sezepemanu/W8HHFLM/wojijifisojebukuseladunir.pdfIn PDF document text
    • https://cdn.sqhk.co/nokikijun/0Fe7mhj/sirona_support_australia.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/bupomomubul_pukuxi.pdfIn PDF document text
    • https://site-1193936.mozfiles.com/files/1193936/66814975268.pdfIn PDF document text
    • https://site-1174654.mozfiles.com/files/1174654/wotisewamotapopizox.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/fgaFifm/download_emoji_keyboard_apk_old_version.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/gapivegek/rojufiwumiwogevuselarizug.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/42276592816.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/sixeno.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/57211822635.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/jalugozolilaxogidosowobi.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/analog_film_paris_full_pack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/imperative_formal_spanish_conjugation.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_off0000fcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 5172 bytes
SHA-256: 7811b047bd39ef3a52f9270cd787b5442484431d79ce67a23bb6c446574216b3
font_01_sfnt_off00010e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E30 10816 bytes
SHA-256: 468dfe835861e54a9df65aafb6bbfbc52f4bdfe2a76d5f8ba074553eb406eb82