Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f78fe52a254986…

MALICIOUS

PDF

78.8 KB Created: 2021-01-25 08:20:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 004e91f26517300d7572df0d2ace6fa5 SHA-1: 669456b0394c4e812c510d40df1141e1dd9d6ecb SHA-256: 93f78fe52a254986e5c90aa25902f491a5063f418e79a9e263a52df17517260f
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/aws?utm_term=aditya+birla+home+loan+application+form PDF link annotation
    • http://smm-target.ru/seraxedowous2z1.pdfIn PDF document text
    • http://ebay-coupon.ru/arena_football_league_2020dm0cq.pdfIn PDF document text
    • http://mihetos.xyz/turbo_car_racing_3d_play_onlineauj9e.pdfIn PDF document text
    • http://reliables.ru/boxisosowol6yayi.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/9duA0QH/superhero_spider_far_from_home_run_tomatoes.pdfIn PDF document text
    • http://qunit.space/tawafebexolafoxiteremuba4i0t.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/VIHTrJ9/boat_racing_simulator_games.pdfIn PDF document text
    • https://cdn.sqhk.co/zumiredosuwi/tjiw23O/gotijazurojo.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/whhJf7m/91170148715.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/hfjgrhd/why_did_my_middle_finger_emoji_disappeared.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/jirebonudur/limawoxafo.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/bos_indicus_razas.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/5842133082.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/lelixe.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/jumiluvijaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/asciidoc_html_to.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/endymion_deck_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/zitagakolevusanep.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_off0000f805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF805 5448 bytes
SHA-256: 75ab25fe1ad7e29974fadc2c7a4aa6bf42389dffa79b1570075f8a295aba0004
font_01_sfnt_off00010a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A67 10508 bytes
SHA-256: c80c413789e61d2f02128d677d023081cdbb691ea343065e09e5f3797e3d58a1