Malicious PDF — malware analysis report

Static analysis result for SHA-256 811fb84097d6ec62…

MALICIOUS

PDF

87.3 KB Created: 2021-09-20 08:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b427a5bce7402ea7ae75285d4a82ac13 SHA-1: 345a611e8c61fc9e70d78358b8b04af291c45922 SHA-256: 811fb84097d6ec624be32eb6192821a999eaa1ffcd920fa9fe81886d632fecf8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://laborke.ru/uplcv?utm_term=12+years+a+slave+123movies PDF link annotation
    • https://comobrew.com/newsite/images/user_uploads/file/37263934427.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/votulakako.pdfIn PDF document text
    • http://coca-colalife.eu/userfiles/file/kakotejip.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/11456168147.pdfIn PDF document text
    • http://studiofantino.it/userfiles/files/ziraludowozudupadijad.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132bc6c44535---36465424506.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/4082501375.pdfIn PDF document text
    • https://cedria.es/DOCUMENTS/FotosFCKEditor/file/73331343687.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/dedukizimujop.pdfIn PDF document text
    • http://qbcar.ru/ckfinder/userfiles/files/12422562085.pdfIn PDF document text
    • http://fence-alarm.com/userfiles/files/62824213955.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/vosufaderarigikekefulopa.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1612fafb593afd---13710738499.pdfIn PDF document text
    • http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/tomiramudeduzudamimapejed.pdfIn PDF document text
    • http://school15-tyumen.ru/f/vejujedifuwewoxuwe.pdfIn PDF document text
    • http://www.hermosabeachbungalows.com/userfiles/files/gebisogigerugus.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/75433449111.pdfIn PDF document text
    • http://gu-bo.cn/uploads/files/feveremipux.pdfIn PDF document text
    • http://hijoin.hu/editor_up/70955131211.pdfIn PDF document text
    • http://live-lessons.net/lcj/web/uploads/assets/file/42150166986.pdfIn PDF document text
    • https://erdenet.mn/userfiles/file/50049838880.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/89666889181.pdfIn PDF document text
    • https://btegypt.com/file/widaradomupisujikunipivu.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/kanedidobalazolemotoxa.pdfIn PDF document text
    • https://otomatcilarmetal.com/otomat/upload/files/92929169404.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 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_off0000edf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF0 18864 bytes
SHA-256: 4fa3ec42d9db9211ec59ee63d90c38309ba89a8f036506dfbaed971f88ce5371
font_01_sfnt_off00011f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F41 10492 bytes
SHA-256: a1a090aee5de32400d82fdb5902cf62d9c1fe9158fcde25595509f342f369ca6
font_02_sfnt_off0001373f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1373F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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