Malicious PDF — malware analysis report

Static analysis result for SHA-256 550a4c75bf064441…

MALICIOUS

PDF

105.5 KB Created: 2021-04-08 05:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: b8545d23f6425908e812301c6106230b SHA-1: ffba0348d76433c47c88db1eee2ed49355fb9ee5 SHA-256: 550a4c75bf064441a7b32bf29d3cbed8022746bca7bae292595b1a6d340d0e9d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://teaapple.space/ludulajarilefekavorenawiduarc.pdf In PDF document text
    • https://s3.amazonaws.com/zategafozasiru/airmon-_ng_kali_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/mortal_kombat_x_sub_zero_brutality_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/here_comes_the_sun_sheet_music_musescore.pdfIn PDF document text
    • http://rutinesuzufogat.mypressonline.com/rigipisum.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/what_is_the_average_child_support_payment_for_one_child_in_michigan.pdfIn PDF document text
    • https://piwevowukitibe.weebly.com/uploads/1/3/1/4/131454699/xatobu-bokukumadumo.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/89670495691.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/tick_symbol_font.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/what_is_colloidal_solution_easy_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/ripesizixodinovikuzet.pdfIn PDF document text
    • http://comforfemj.fun/ask_and_it_is_given_book1ekna.pdfIn PDF document text
    • http://bavimobuxadu.medianewsonline.com/bissell_power_steamer_heavy_duty_3-in-1_manual.pdfIn PDF document text
    • https://melajepanaxon.weebly.com/uploads/1/3/5/3/135398769/1254733.pdfIn PDF document text
    • https://raketesi.weebly.com/uploads/1/3/4/6/134632322/nopovu_powofejigedo_tawise_luxikukepona.pdfIn PDF document text
    • http://antonioita.fun/16168536305nmswq.pdfIn PDF document text
    • https://jelebemurufipo.weebly.com/uploads/1/3/4/4/134442628/035800398fab.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/57894228092.pdfIn PDF document text
    • http://all-system7.club/ff12_hunt_club_guideksbch.pdfIn PDF document text
    • https://seumenha.ru/123?utm_term=sailor+chibi+moon+transformationPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00015e63.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00015e63.bin)
    • https://uploads.strikinglycdn.com/files/96fa62f3-7b24-412b-9a4d-cd66f059f7b1/89287302365.pdfIn PDF document text
    • http://jimomurapujivo.onlinewebshop.net/2008_g35_transmission_fluid_change.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbcea9c5-05ee-4bc7-bf88-5cb22886337e/what_navy_awards_are_worth_points.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85de5d1-4631-4c67-b533-d39ea4063ad6/jabawujexumekakawaku.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 extracted file (font_01_sfnt_off00015e63.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000142f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F5 8156 bytes
SHA-256: bfbdba2439e7d658c7a730aedf534578c8aa7409066c14c17f6e48eea6a2a794
font_01_sfnt_off00015e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E63 5364 bytes
SHA-256: cdd914b9b3828da567579442a43d25e8b1a123bd3cefa564a274648d3f13600e
font_02_sfnt_off00017074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17074 11636 bytes
SHA-256: 6cf8dbc647365e8833dfe4446f5fbaa2c998bcab4b16556d01f7a23adf2ac6c2