Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b77056676b7530…

MALICIOUS

PDF

341.5 KB Created: 2022-01-18 02:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: f493a73c3db75efe84873db7416053c5 SHA-1: 3fdefb2cbf1210c560d9a44f66673c9784f05e34 SHA-256: 88b77056676b7530a8ca48feea1fe2a59c9098b8386110dd045896a8ef9fe138
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

Heuristics 7

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://marta-galan.com/files/varios/file/6948168148.pdf In PDF document text
    • https://riosemarescentrodemergulho.com/ckfinder/files/93890217991.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e603d3d6f3---bifexesibufunipadiwur.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161db69b3dbf97---popevafedefixe.pdfIn PDF document text
    • https://thegmsbihta.in/userfiles/file/lovejabedajimoku.pdfIn PDF document text
    • http://chickenwild.com/upload/contents/images/images/19811846515.pdfIn PDF document text
    • https://dehaventransportation.com/home/de/public_html/ckfinder/userfiles/files/45284645587.pdfIn PDF document text
    • http://fukushigetakahiro.jp/pic/files/wuvovosazomukekodukagigem.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/sewusikuribi.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/notaripuzixaki.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/fawevapevixomoboxewak.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1618a002aa198e---zisonupisiwatunemuper.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/kijibimijoro.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/93187844691.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/kemapozumozokesoduresi.pdfIn PDF document text
    • https://gulecbakliyat.com/panel/kcfinder/files/81926594715.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/taruguz.pdfIn PDF document text
    • https://meiontravel.com/UploadFiles/file/20211125224833150.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202112090805222677.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/guvezuvebewogedetumuxo.pdfIn PDF document text
    • http://emrc.ie/upload/imagecontent/file/773933534.pdfIn PDF document text
    • https://led7.ru/file/kozulomikofuvo.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/f7kmtssboa9s12torh9iq9o7i9/68388794521.pdfIn PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/logokaximubase.pdfIn PDF document text
    • http://xn--38-mlcqjbufcz6h.xn--p1ai/userfiles/file/vipivakomemumijoxuvem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/vItLtdF7Pec/uplcv?utm_term=adobe+photoshop++for+windows+7+pcPDF link annotation
    • 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_off0004e857.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e857.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E857 17956 bytes
SHA-256: 0fcfdb5b3f9b014b0626aaa0ae52ee69e710215f8e66c40df4b2c90910aa18c1
font_01_sfnt_off000517da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517DA 10768 bytes
SHA-256: 2163fa1960f59a7d49ab394463e43d303e63b487447a28eb41a60f9670a8d9e8
font_02_sfnt_off0005307c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5307C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336