Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fe2219467f8b21…

MALICIOUS

PDF

73.7 KB Created: 2021-03-01 16:32:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 54262f4c83e5cb82987f15f04bf414f6 SHA-1: c067ab8e7e1843725a5db3e11988ffdbc39b82ca SHA-256: 88fe2219467f8b215998ee22ffbdc7a02b1137009d338026d0aa02378607ff86
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=fg+knot+tool+diy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fdb8c0ed35ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369648/normal_5fc6736b8f690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475730/normal_5ff9f06d3f24a.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/eB9YlXu/craftsman_tool_box_lock_fell_out.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408485/normal_60388e6dac72c.pdfIn PDF document text
    • https://cdn.sqhk.co/gelowidabik/lr6ifgI/8749485976.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/nNzeicT/advanced_space_flight_full_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/mSD0Wjd/download_aplikasi_ultimate_photo_mixer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_6021a05d9d5a1.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/3yhfggN/t_i_game_dragon_city_hack_appvn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409092/normal_5fc9332c7afdb.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/fasomusogapovi/kodaline_all_i_want_piano_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/depujijafajorubuse.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/constitutionality_of_restitution_of_conjugal_rights.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/akuntansi_sektor_publik.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_off0000e771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE771 4628 bytes
SHA-256: a792088878f3d6b8a85d14eb52b8f0025dc7e5a7c5d1644f5d7b9c3f8ebf30a8
font_01_sfnt_off0000f757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF757 10240 bytes
SHA-256: 0b63903c0d218f2bfd40d0bc668ac8386c92b6678fa6d603cef019d295cdf30f