Malicious PDF — malware analysis report

Static analysis result for SHA-256 6faa6f4de08c37f1…

MALICIOUS

PDF

49.5 KB Created: 2020-11-07 09:20:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: a5120db3c8a9a63a75dd7a1468b38c3d SHA-1: a6add1cb68aec3687e6442d18ff90d009656e44e SHA-256: 6faa6f4de08c37f1cc499bb32300c719a8eacac32b8009951e6f6290dfb4f3cb
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/wb?keyword=fox%20and%20wolf%20breed PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/sazalesowi.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/enerplex_bluetooth_speaker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/julakepadifeduxafulux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d97a537-6019-40dd-b5d8-e87637c2d920/tebovewifamesub.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/jaxilebimasanon.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/centroid_of_quarter_circle_arc.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/81431904175.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/modele_attestation_sur_l_honneur_de_non_ressources.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/act_like_men_free_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c291e41d-f3dc-4f29-a21a-af3fe8b9a694/my_hero_academia_season_1_episode_7.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/court_of_thorns_and_roses_coloring_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/fepixuj.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/human_body_organs_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/ximivezogixifuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/kofuribiripowavo.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/52538921216.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_off0000811f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 4980 bytes
SHA-256: c7837558061d6d1311b1e2312f5a82d448bacc121bf6b889543d35762497a1ab
font_01_sfnt_off00009238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9238 11708 bytes
SHA-256: cf9635181a105ab8ef9cb1d772390fec9f8340a6033ff31af1f3f66029e0cc3e