Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe13d138905e4c6…

MALICIOUS

PDF

73.8 KB Created: 2021-01-31 20:27:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: c5d60bbf7b051827f25d02d23440989b SHA-1: d9dd11de6cfbd530df5c7e1f66e3a8f85ff649a5 SHA-256: bbe13d138905e4c61a62540620b00b31af9d78ff968faca0df13f5d472fad418
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=7th+grade+algebra+word+problems+with+answers In PDF document text
    • http://vafakewa.iblogger.org/adrenalina_racemica_mecanismo_de_accion.pdfIn PDF document text
    • http://opit.space/card_matching_game_online4e9eo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402244/normal_6004bcde27d5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417029/normal_5fdfc9b98e00c.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/gfhggge/alien_invasion_books_goodreads.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_60038c03d0f65.pdfIn PDF document text
    • https://cdn.sqhk.co/wokowuvawuz/gjcW9gf/dead_colony_hacked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/hbhhigq/the_voice_guest_coaches_season_18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422879/normal_600ef43eadba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fd8a0fcdd46e.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/kudefem/89546921746.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/lidozowokovuvex.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/free_whatsapp_messenger_2018.pdfIn PDF document text
    • http://texatutegelemov.rf.gd/39195183677.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/bootstrap_studio_4._3._7_free.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_off0000dcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC4 5588 bytes
SHA-256: d76cdfe4fd62b01e7dcd26fa2ed160f3cfe87abc40cbd0292826295d737c393f
font_01_sfnt_off0000efa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA8 12024 bytes
SHA-256: 5aa043a7b2eba66de6ef253fe7818d50b3ebeccd6ef3523063fadba0858bf2fa