Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a4a939996110bf…

MALICIOUS

PDF

72.2 KB Created: 2021-03-03 23:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9003a08284e5d5c57395d8a466590c25 SHA-1: 1995b90cf8de4815fc6cd62ba6b6b29e770f294f SHA-256: 53a4a939996110bf3482d9bbf59182efbb7fc7f19e5551cbc40840d3efaf2f6c
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://pelibifir.ru/award?keyword=what+can+i+make+with+jelly+babies PDF link annotation
    • http://nipawifaxupus.mygamesonline.org/king_lear_movie_cast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376362/normal_5fc6dba9dcc03.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/built_like_a_badass_results.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/tavugikuvirulalabaz.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/1gdhisg/steam_link_pc_download.pdfIn PDF document text
    • http://meroxisawifagu.mygamesonline.org/fallout_4_weapon_mods_xbox_one_2019.pdfIn PDF document text
    • http://o-karte-kopilka.com/95654532404s2ev5.pdfIn PDF document text
    • http://vosajizegek.mypressonline.com/lesalamuxopebu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448558/normal_5ff7590b6f243.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/KapkhjG/sad_video_status_download_in_tamil_share_chat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367941/normal_5ffead1e35329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_602473f847e7b.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/1AqqUiq/mini_ninjas_ps3_trophy_guide.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/mawesenasijoser/lesosugikakora.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/nox_android_emulator_for_pubg.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/microelectronics_circuit_design_4th_edition_jaeger_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/cannibal_corpse_songs.pdfIn PDF document text
    • http://tuzuxutetug.atwebpages.com/85319772090.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/quickbooks_import_chart_of_accounts_template.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_off0000dcba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBA 5428 bytes
SHA-256: 95e8d15b64042a38b0cd2a5b46de97082e327beb6d064e03677add0a6189912c
font_01_sfnt_off0000ef2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2E 10608 bytes
SHA-256: 7ac7b80612cbfc69371f2fff11ad867ed82562970ad4ba8f8021780d4fb0b480

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