Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8a5ee6302f1307…

MALICIOUS

PDF

68.5 KB Created: 2021-10-14 16:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: cc7b76d1b1ad2cedf275b4bd6c81e9e3 SHA-1: 2123017fe6b162432d247b07a99fce554e50f50e SHA-256: aa8a5ee6302f1307ff9b7e114f3d73a4d6b17ec0c21a1aedc4ac9c0f132ca6d0
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://koreabulk.net/userData/board/file/jerofevi.pdf In PDF document text
    • http://smenergy.kr/uploaded/file/1793064777614b53da343a9.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/9844183708.pdfIn PDF document text
    • https://synersys.fr/contenu/file/fosewatukuzela.pdfIn PDF document text
    • http://asja.ua/userfiles/file/56305890472.pdfIn PDF document text
    • https://hometutorsdelhi.com/userfiles/files/45902760929.pdfIn PDF document text
    • http://artdental.hu/editor_up/zuzojosupasubox.pdfIn PDF document text
    • http://unsersohn.com/images/file/23958327612.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/65400344365.pdfIn PDF document text
    • https://dbhattacharjee.com/ckfinder/userfiles/files/wanogonamipiruliboxenevap.pdfIn PDF document text
    • https://sangolongphuong.vn/longphuong/news/files/17119023113.pdfIn PDF document text
    • http://preprod.app-nomads.com/ugecam/admin/ckfinder/userfiles/files/puguvagenoj.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/56666407634.pdfIn PDF document text
    • http://opsir.eu/files/file/9592748672.pdfIn PDF document text
    • http://insightonafrica.in/userfiles/file/pakorominoxunusurud.pdfIn PDF document text
    • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/fexotilafosaweju.pdfIn PDF document text
    • https://xn--80aesyq.xn--p1ai/files/file/fimudebinelaril.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/82697424411.pdfIn PDF document text
    • http://keemunblacktea.cn/uploads/file/191130314550.pdfIn PDF document text
    • http://ruihuitax.com/files/file/99100728405.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/jatokukujanimonivufukev.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/kotubedo.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/5fec6f5ad6d315cf9e5c72151e15622d/putawojojudo.pdfIn PDF document text
    • http://dvg.asia/ckfinder/uploadfiles/files/lemejeliva.pdfIn PDF document text
    • http://185.33.116.142/~bbyacht01/upload/files/9643868382.pdfPDF link annotation
    • https://dobre-akce.cz/media/files/file/vitud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/TxADE9PCSUw/uplcv?utm_term=name+of+adjectivesPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C1 10560 bytes
SHA-256: 1e7cc4ecc8ca7d031a7a52001691bd650d825caf7a6c1bad176bf5eefbdd8f9d
font_01_sfnt_off0000c9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EE 14084 bytes
SHA-256: d0304e91e1636b769dbc2f0e8de5eb03a072ec517f63b1a9120fcf3b015b9860