Malicious PDF — malware analysis report

Static analysis result for SHA-256 15563efed763e849…

MALICIOUS

PDF

63.8 KB Created: 2021-01-27 23:49:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a78a86ca46145c7eeeb38497f8a72456 SHA-1: fd102d08cedd5086d98a221c0ccb9d61537865de SHA-256: 15563efed763e84968404ae156449ed59ecc0a60f18f75c8568fd23acebfd890
194 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
  • 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://yafferge.ru/wb?keyword=3d%20sniper%20target%20shooting%20games%20apk In PDF document text
    • http://gladkoe-telo.xyz/82403855554bzska.pdfIn PDF document text
    • http://miworusak.iblogger.org/86974769335.pdfIn PDF document text
    • http://kartaidatodemeleri.com/mini_3d_magic_maze_puzzle_ball9jzc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471082/normal_5fcc21ed4260f.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/8626768888.pdfIn PDF document text
    • http://bezigex.iblogger.org/5495258786.pdfIn PDF document text
    • http://sanadewa.iblogger.org/80763651025.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409417/normal_5fccbbd7ee822.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/pubopelej/kipuxozaxejazumirotu.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/clock_faces_worksheet_year_3.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/antares_autotune_evo_vst_v6._0._9.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/is_aplastic_anemia_a_form_of_cancer.pdfIn PDF document text
    • http://juwemijawikipo.epizy.com/rakij.pdfIn PDF document text
    • http://rasunafosav.epizy.com/hollywood_full_movie_tamil.pdfIn PDF document text
    • http://segigeserife.epizy.com/catstronauts_guided_reading_level.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_off0000bc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4B 5472 bytes
SHA-256: d5620f85f5c9414742f44330eab08843ecd16a52f238bde635a1a65530a15c1c
font_01_sfnt_off0000ceba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBA 10168 bytes
SHA-256: fc08cabf2bbbfd87a3deb74e37e2b940e3e71c47172b1c8431fcad1891fad625