Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0398b3c9bcda41e…

MALICIOUS

PDF

73.6 KB Created: 2021-03-01 22:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3bc3c74565fcf853a9db0880ef44ff39 SHA-1: b61a60567ee6f2d6b549c4b95a4dc18e7dc3413c SHA-256: c0398b3c9bcda41e738572050f4b04b57bb50f9dd00380d1af39dce04dc12f42
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=adjectives+to+describe+rain PDF link annotation
    • http://picsonair.com/watch_power_rangers_dino_charge_episode_1_online_free5mw8o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5fc66757b3986.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419192/normal_5fcc4ea40e65c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447253/normal_601fb087ae703.pdfIn PDF document text
    • http://springwin.space/peq_15_specsvlsfo.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/amazing_grace_chords_download.pdfIn PDF document text
    • http://sushibara.net/icis_heren_nel_report_esgm1xlov.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/how_to_write_an_essay_paragraph_structure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sazevaxorofezag.epizy.com/dibarewefiwilutijewo.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/bengali_movie_free_a_to_z.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/dewalt_drill_driver_set_80-piece_dw2587.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/murray_tractor_drive_belt_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/xutifikurebupojegogewuxag.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/psp_games_android_dragon_ball_z.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/81185448610.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/how_to_connect_garmin_approach_s60.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/how_to_restart_ubee_wifi_router.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/tibilosovagenimakabutegaw.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_off0000e46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46C 5168 bytes
SHA-256: fe1f4a90155b2eefd8857b8972211ab39d4e7390896894467cb9c092a7ebc518
font_01_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 10360 bytes
SHA-256: 964969f73e8b0c0596a128cb6e9aa0c462f0e8f0b853052e07fae73058e0150f