Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d1ef615b1bd2c8…

MALICIOUS

PDF

75.8 KB Created: 2021-02-09 23:29:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4f8bc59d64ed5128d93521c6ace1a63e SHA-1: 862e6fe3036a1785599fde191e2d116cad8fef56 SHA-256: e3d1ef615b1bd2c823d0e4765195046e1da4fbb1543b8866c2933a64312e38a9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/aws?utm_term=dell+emc+poweredge+r640+datasheet PDF link annotation
    • https://dupukaradox.weebly.com/uploads/1/3/6/0/136015529/mometoxoweto_kavajawanopuge_zusesixamipu.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/jagjblk/batman_arkham_origins_world_s_greatest_detective_suit.pdfIn PDF document text
    • https://cdn.sqhk.co/vakamuzawa/ij4srqf/elite_aaa_hockey_tournament.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/dI6hfP0/kopeg.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/cFZbQn3/cute_profile_wallpapers_hd.pdfIn PDF document text
    • http://serdyukov.pro/psychological_facts_freehilmh.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/ghbgiji/diamonds_of_london_north_star_mall.pdfIn PDF document text
    • https://mufudenufasos.weebly.com/uploads/1/3/4/4/134492520/pakapenifanid.pdfIn PDF document text
    • https://cdn.sqhk.co/kefekawit/5iibjaD/varedapo.pdfIn PDF document text
    • https://xejevegufukax.weebly.com/uploads/1/3/0/9/130969627/abb61eb776e.pdfIn PDF document text
    • https://cdn.sqhk.co/zevukodixu/dk3Jq6z/pac_man_world_2.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/DSWhgt1/frozen_crushed_tomatoes.pdfIn PDF document text
    • https://cdn.sqhk.co/zivalutapa/dggWhac/monster_shooter_game_download_apk_offline.pdfIn PDF document text
    • http://kigowamukidiba.iblogger.org/gobirexum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sotatelovutegep.epizy.com/sakuzonusafitowafowavulug.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_off0000e7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D9 5964 bytes
SHA-256: 06b19d2d74c2d021f5467934ae790625d811771918057a1595ad38573f462ab9
font_01_sfnt_off0000fc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 11828 bytes
SHA-256: f300cd3f435020948f006caf37546a7bc358dae3fb5fbaf172f0dbc507db3290