Malicious PDF — malware analysis report

Static analysis result for SHA-256 209b0273adbdd618…

MALICIOUS

PDF

56.1 KB Created: 2020-10-23 23:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: bd2b1e0cc3761ff61ba0472f5699bc64 SHA-1: 7a3e96cffd4a5b8e7a96d724d0ba952413646b8c SHA-256: 209b0273adbdd61828c4a820622b93ff34de909680517cbbdb08cc75eab6cbdb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.link/123?keyword=correlational+design+meaning+pdf In PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8625127.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/zuramawexenarixopo.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/vujovopemaw_renatirajenaboj_kudavigelil.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/5067064.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/18b3dc9062.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/kekifafonusidit.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000099c8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000099c8.bin)
    • https://s3.amazonaws.com/mijedusovineti/cesarismo_democratico_laureano_vallenilla_lanz.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/10th_class_math_book_arts_group.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/nimobuvakefibebed.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/35186021117.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/43530094412.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/38126293802.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/bozanstvena_komedija_dante.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gobitiridebejukojuzapijus.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/90191024142.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/alteraciones_leucocitarias.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/nuevo_diccionario_biblico_ilustrado_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b46797-fe84-466a-9acb-da3a485f974f/32956836734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e4a61d-17a8-4499-a122-956df76aaa40/funky_fingers_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b73905f-5bc1-42b8-906b-c393d9e11e91/15229727657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de7150c-a304-4ed7-a964-9f3272e7ec23/descargar_pokemon_mundo_misterioso_e.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 extracted file (font_00_sfnt_off000099c8.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C8 5268 bytes
SHA-256: 9b90cf8771080162ebd605d08ba338125550ef20a8dda50a4834314fe888d436
font_01_sfnt_off0000ab9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB9A 11004 bytes
SHA-256: c33ab722fe05f5221c3274cd242e41ea30529b350af2d2cd50803a6f8fc3e6fc