Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d8b7c71ec2dcf8…

MALICIOUS

PDF

74.8 KB Created: 2021-02-16 09:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dbd5ccf1a58eb95472ef0f8bd13fa5da SHA-1: 982b6a960ae84d08fe55358aaefc9840b0148e28 SHA-256: 47d8b7c71ec2dcf89712e3a816d892194eeb31e00e6d49c93857bd0f53309fdb
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=amls+pdf+download+portugues PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490244/normal_5fe4fb2da63d2.pdfIn PDF document text
    • http://flowerport.store/8283677505l5v0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472186/normal_60248166412ef.pdfIn PDF document text
    • http://pressit.fun/sapezizoxoxuligeki6jx2o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_5fd7bbe6c1276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_600efffa065bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_6019939a985a0.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzosiboweja/ihIifhi/alien_escape_room_nottingham.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_600e71be161de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fe2f21aa2e29.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/jemazejodep/rebopalojitekeveniba.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/qld_tv_guide_today.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/algebra_2_multi_step_equations_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/dj_flyer_template_psd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/jizezerizadekaxovovu.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/hit_ball_game_app.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/fallout_4_ballistic_weave_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/mutowubolufeduwevajogumu.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_off0000e54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54A 5444 bytes
SHA-256: 5168a82f894eb03ea28f94b674f534e593f64a45d1af86cd1256d4a4dd885eea
font_01_sfnt_off0000f7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C8 12076 bytes
SHA-256: 41a33f047db49817d262b42b99aa1e6dfd3a85223293c33d7516294744e7629b

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