Malicious PDF — malware analysis report

Static analysis result for SHA-256 258c4bb3f086e173…

MALICIOUS

PDF

351.1 KB Created: 2022-01-01 20:36:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: cc4b52302592f2edd8884ac513664de7 SHA-1: 231ef4ad89f9490be111bbd7b12366248dbbf82b SHA-256: 258c4bb3f086e173df21192878cbf16812c8b1093b8d2129015b16be7b0b3758
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://drafthe.ru/uplcv?utm_term=broadsheet+south+melbourne+pubs PDF link annotation
    • http://omorits.jp/uploads/files/welixid.pdfIn PDF document text
    • http://eapver.com/upload/ckimg/files/202112130359308501.pdfIn PDF document text
    • https://pchome.uzai.ca/upload/files/suramabef.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/napane.pdfIn PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/36680843971.pdfIn PDF document text
    • https://regionalhealthprogramsww.com/images/file/rukewikigixepop.pdfIn PDF document text
    • https://ladangmimpi2.com/contents/files/betofibokunasubekerigop.pdfIn PDF document text
    • http://ckm-machinery.com/userfiles/files/3977487979.pdfIn PDF document text
    • http://jzssf.com/upload/file/161512383690.pdfIn PDF document text
    • https://albertoangel.sinecsas.com/ckfinder/userfiles/files/2833807940.pdfIn PDF document text
    • http://polaria.cz/images/file/49483504559.pdfIn PDF document text
    • https://chulintemple.house-well.com/CKEdit/upload/files/6584161500.pdfIn PDF document text
    • http://humanlitech.com/files/files/10767074688.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/lajuwaxomojazitus.pdfIn PDF document text
    • http://dc-184e2b96ee46.haribhoomi.com/userfiles/file/58095678763.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16140bec5bb121---91544010549.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/50957629952.pdfIn PDF document text
    • http://szerecsengyogyszertar.hu/editor_up/kudevubalitojofedofigebel.pdfIn PDF document text
    • https://profix.fr/ckfinder/userfiles/files/85618798827.pdfIn PDF document text
    • https://firsatoyun.com/calisma2/files/uploads/9603899017.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/93013470660.pdfIn PDF document text
    • http://murielbellhomes.com/userfiles/files/76706643255.pdfIn PDF document text
    • https://floridagreatescape.com/media/file/fedarakapimurub.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/wulop.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00051331.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00051331.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51331 16260 bytes
SHA-256: ec26ac5aaa8baf0697ba6e99a54309aa44220150524ca0c7ad1f583e82f38765
font_01_sfnt_off00053d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D1F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000553c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x553C3 10856 bytes
SHA-256: 57534bedab70a3c4330b0e1bb2123b2393b0c59dc9322c673930f6089815ea34