Malicious PDF — malware analysis report

Static analysis result for SHA-256 1577f752b2d8ca29…

MALICIOUS

PDF

72.6 KB Created: 2021-03-03 19:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cb8883ca9475ebeeaa4ed494ad1bde4b SHA-1: 4013918cfa2a827e4c2ce0c40637f077ee13d1cf SHA-256: 1577f752b2d8ca292c4e3c7dd6a67e1b18513181c33e654d38e6a3fb19addf76
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://botokaw.ru/award?keyword=corporate+social+responsibility+towards+owners PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384819/normal_602e2213de696.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwoxebu/1msO3hi/romantic_ringtones_songs.pdfIn PDF document text
    • http://bivozebavi.iblogger.org/cd_cover_template_google_docs.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/2_phase_method.pdfIn PDF document text
    • https://cdn.sqhk.co/ruperodu/uPcjj5D/easy_thai_red_curry_tofu.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/how_to_get_out_of_debt_fast_and_save_money.pdfIn PDF document text
    • https://cdn.sqhk.co/bavimimo/okrhegg/alone_movie_review_ebert.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/adidas_apple_watch_band_38mm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476427/normal_5fd3a1ca59c57.pdfIn PDF document text
    • http://wozilimesiz.mypressonline.com/how_to_train_your_dragon_3_release_date_2020.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/how_to_set_timex_marathon_wr50m_watch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_6022ae30ed39a.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/zobuwubedak/advanced_algorithm_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/narasimha_video_songs_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/sorting_polygons_worksheet_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/warframe_eidolon_gantulyst_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/pipe_culvert_design_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/gunlance_guide_mhgu.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/rabofinudidaganubisug.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_off0000deba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBA 5304 bytes
SHA-256: b40cd92319d37b613374cf0d5c197a6b13d4c33b5d4a3509eace3a2bcd43a642
font_01_sfnt_off0000f0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D9 10696 bytes
SHA-256: a0338e03b45396fa627e9bcb6b0983c464b0f67e1d6ace690c0215243d8d13c2

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