Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4d65d173bdde82…

MALICIOUS

PDF

67.0 KB Created: 2021-02-25 21:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 63c33ee4f70a7cbee9cbd4a179bb1550 SHA-1: 83e44f3f869c267f1b78d05b1964a8692094093e SHA-256: 3d4d65d173bdde821c85645758a4840cd7bbffdeb7e4537ddc8a87ab79a48424
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/award?keyword=frank+sinatra+the+end+of+a+love+affair+lyrics PDF link annotation
    • https://cdn.sqhk.co/pulizojiwim/cq2oXFO/codm_global_top_up.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/iice5B2/doomsday_clock_comic_explained.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/doQ0Nhc/favuzosabojak.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/eKAGbia/rakizizizi.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/jalapezuxaranorejeponok.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/jjghOic/15429010274.pdfIn PDF document text
    • http://bometaximom.scienceontheweb.net/black_and_decker_gh3000_spool_cap.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/iUgh4Yz/50898306982.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_601ce4f9c06fa.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/twhd7Sk/deserted_zombie_survival.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/vatakefojunib/vuwajonusuniwirokotuge.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/maze_runner_will_there_be_a_4th_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/fofetu.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/netgear_fs108_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/liasioning_agent_agreement_format.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_off0000cb3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3A 5288 bytes
SHA-256: a402195e3e73a12a94f30556cece804637687972d2b41afab30dfc23ea8eceb9
font_01_sfnt_off0000dd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD44 9896 bytes
SHA-256: e23296fed4da195963850a7fdfe158efd0c489bc701d902390eb3b216fa3154c