Malicious PDF — malware analysis report

Static analysis result for SHA-256 d901e2eee12218a3…

MALICIOUS

PDF

84.7 KB Created: 2021-09-15 14:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 07ff1c19da20798a132e9df8a36e5090 SHA-1: 777c3562702b8163e7404e749aed828e983688b8 SHA-256: d901e2eee12218a31dcb19d209711ac5e38ad53a78f2a7e63008f9334196a485
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect the user to malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of embedded JavaScript points to an attack pattern involving client-side execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://oniceh.ru/uplcv?utm_term=how+to+check+my+itunes+balance PDF link annotation
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f95d9a2fb7---vixezinizufo.pdfIn PDF document text
    • http://rentbucharest.net/images/userfiles/57145160159.pdfIn PDF document text
    • http://pinturasoltra.com/images/slider/files/zofadozudetebuvidibe.pdfIn PDF document text
    • https://stiglic.sk/userfiles/file/36965690374.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xadanu.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/fubaninefemopuzav.pdfIn PDF document text
    • http://zezoalza.com/ckupload/files/22280909954.pdfIn PDF document text
    • https://pagodatalk.com/_UploadFile/Images/file/zuvunisebezuworoxugaxi.pdfIn PDF document text
    • https://snpwachq.com/files/js/ckfinder/userfiles/files/vapimag.pdfIn PDF document text
    • http://labsshop.com/d/files/zamowefejitidux.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/51771323839.pdfIn PDF document text
    • https://makojudo.pl/zdjecia/fck/file/76297110509.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/xabesosenetupoke.pdfIn PDF document text
    • https://www.abandassociates.com/ckfinder/userfiles/files/17323058715.pdfIn PDF document text
    • https://protraderin.com/userfiles/file/16906217828.pdfIn PDF document text
    • http://htwy.com/upload/file/towejeliwosikimakifebe.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/xabedemonimunoxinuloro.pdfIn PDF document text
    • https://value.ae/userfiles/file/15538610124.pdfIn PDF document text
    • http://iccarrentals.com/files/file/runajovogomube.pdfIn PDF document text
    • http://angelofthewinds.org/ckfinder/userfiles/files/tujipuvafomusesaz.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/lijisibexujekopeperav.pdfIn PDF document text
    • http://aa-nusd.jp/gagonedodifasosodofisan.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20210901_015747.pdfIn PDF document text
    • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/31946782932.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_off0000e6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF3 10916 bytes
SHA-256: c5f66706a8f35a6791e48eb5df2dd330f546e072d6072c7562a2675fe609bff3
font_02_sfnt_off00011819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11819 17308 bytes
SHA-256: 8d8919119a3ed4ff1a11619bd52e685a6c9bcab62f71de2f0b77a2091bd01db9

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