Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93b6f64a9759a96…

MALICIOUS

PDF

70.4 KB Created: 2021-02-28 18:20:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: df1886273b4ac893cdf605654a4f32b7 SHA-1: d5c4a5dcab506baa1b6286c8cbef3afb1accef08 SHA-256: d93b6f64a9759a964f9f3764c868bd32278c901522e9cd74ff6ff8ae60d60668
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wb?keyword=reset%20modem%20tp-link%20tl-wr841n PDF link annotation
    • http://jofufunobek.sportsontheweb.net/dufuserewimov.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/hjhbxO7/89771212082.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/FhcwLid/metropolitan_theatres_santa_barbara_paseo_nuevo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382953/normal_5fefa90475e57.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/aijijjf/40378354641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446026/normal_603480b0a54e3.pdfIn PDF document text
    • https://cdn.sqhk.co/zalopubid/geQxhd6/zoom_cloud_meetings_oder_zoom_rooms.pdfIn PDF document text
    • https://cdn.sqhk.co/ximepadogi/7jccKR2/foxuram.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/how_do_you_service_a_husqvarna_sewing_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/hiefege/drawer_slide_bracket_l.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/ieyTabr/hide_and_seek_io_game_zone.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/fjf62E5/18371335385.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/bupijila/mezekerimizulojibut.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/high_level_barrows_guide_osrs.pdfIn PDF document text
    • http://nujugeteteda.myartsonline.com/jozipibefavikubi.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_off0000d65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65F 5424 bytes
SHA-256: a378e44ddaf33aba4cc2975a48526fa1a3090e308baafb32f2a45a35675d28cd
font_01_sfnt_off0000e8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E3 10512 bytes
SHA-256: 27bc2da9620ed11067fc8f4d1305429661237f94a0ec3b03863e6c4873608069