Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd72676dda5e957…

MALICIOUS

PDF

107.3 KB Created: 2022-04-18 23:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: a0ec0c00f836c527d3e814029c418719 SHA-1: 73b1c7ed1a4a9d719a64e1129a1bb09ad2fee46d SHA-256: 4cd72676dda5e957e61d51cb56629317c47ac9b8971d1a42c01375db1eed9b9c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 https://tisemijosugimuv.weebly.com/uploads/1/3/1/0/131070246/letesazojukajefopa.pdf In PDF document text
    • https://melenoradu.weebly.com/uploads/1/3/4/3/134340649/5362904.pdfIn PDF document text
    • http://www.dagmarsvendova.cz/admin/js/ckfinder/userfiles/files/92282146256.pdfIn PDF document text
    • https://wekasekizoturir.weebly.com/uploads/1/3/4/1/134131482/zopiromonoj.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/xozere.pdfIn PDF document text
    • http://chongthamnguoc.vn/img/files/93485535854.pdfIn PDF document text
    • https://unityofmyanmar.org/images/files/xowiforafuzuw.pdfIn PDF document text
    • http://patriabrno.cz/userfiles/files/20424832457.pdfIn PDF document text
    • http://elitk.ru/_files/3144327152.pdfIn PDF document text
    • https://nitdgp.ac.in/uploads/userfiles/files/94654894530.pdfIn PDF document text
    • https://autoserviziparlatore.it/filesUploads/file/9599492939.pdfIn PDF document text
    • https://ngusacdon.com/upload/files/80015337531.pdfIn PDF document text
    • http://postelezmasivu-brno.com/ckfinder/userfiles/files/77019847294.pdfIn PDF document text
    • https://bivunuse.weebly.com/uploads/1/3/5/3/135392281/2141422.pdfIn PDF document text
    • http://vinaaquachem.com/uploads/files/701847725.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/gononivilotulesado.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20220216201427.pdfIn PDF document text
    • https://nirmalamathachurch.org/cms_uploads/image/file/mizosoniwuzuwisutab.pdfIn PDF document text
    • http://poney-club-romilly-aigre28.fr/userfiles/file/47763945244.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/14574776963.pdfIn PDF document text
    • http://chamdure.com/DATA/files/82188636404.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/a7ec14d863cf3b32862fc3433db173b9/sopiniwodurenon.pdfIn PDF document text
    • http://rpsbchamber.org/editorData/file/33871395138.pdfIn PDF document text
    • https://lovig.co.za/YmrXLWy8?keyword=dell%20inspiron%20e1505%20ram%20maxPDF 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_off00013ad2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00013ad2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AD2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000152e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152E4 19008 bytes
SHA-256: 0ca3f140c10fd5aa9cc10dfe480c02b4566090c991e322543a6b8326a75c50b9
font_02_sfnt_off00018619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18619 10724 bytes
SHA-256: cb26bd534651188e9700d5fd1858d0ee883b7a57f0d3441c9905e94f2f3f9ec3