Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f0e359ec937aa0…

MALICIOUS

PDF

78.9 KB Created: 2021-09-15 20:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: b84bb4e358468e48efdd96b54edd52e6 SHA-1: 1000e8073ff2353782749aa5fadb14d29aed1533 SHA-256: 30f0e359ec937aa0ebff3e97345d07f0b54d291f020ff6b77a2705b3d234c799
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating it is designed to redirect users to a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of embedded JavaScript points to its use in executing malicious actions within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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://coretry.ru/uplcv?utm_term=cell+to+singularity+mod+apk PDF link annotation
    • https://remini.hu/userfiles/file/38319350989.pdfIn PDF document text
    • http://dvarenda.ru/upload/file/pitukafegeguvaduxitopafo.pdfIn PDF document text
    • http://www.pro9apps.com/app/webroot/files/uploadimagesfile/gomug.pdfIn PDF document text
    • http://mc-opony.pl/files/file/71204332379.pdfIn PDF document text
    • http://orthopediedelft.eu/files/pedasupajemiponemozebapan.pdfIn PDF document text
    • http://baovethanglongmb.com/upload/files/1065355831.pdfIn PDF document text
    • http://wieswioska.pl/userfiles/file/36313157638.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/27568182137.pdfIn PDF document text
    • http://roomyab.ir/basefile/roomyabir/files/54590822205.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/41856171380.pdfIn PDF document text
    • https://poganyvolgyi.hu/userfiles/file/46222784471.pdfIn PDF document text
    • http://residencelesaline.it/userfiles/files/58062360711.pdfIn PDF document text
    • https://aluvioneschicamocha.sinecsas.com/ckfinder/userfiles/files/piwaboves.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/c0421820c8849af1980685cd81be5142/tobifupepadetupofiw.pdfIn PDF document text
    • http://vnationwide.com/userfiles/files/lufenifikelujijiraxotuful.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/48344733947.pdfIn PDF document text
    • https://dongciao.com/uploads/files/202109150905358653.pdfIn PDF document text
    • http://myslizdrave.com/soubory/87667401495.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/67687394128.pdfIn PDF document text
    • http://nhasachnguyenvancu.com/Images_upload/files/lemozuso.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/30317806348.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/27431100164.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_off0000cecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E1 17492 bytes
SHA-256: 6ecda4bd30906b6d5a97d8e0006888c2c8a63ee21a62177e3af6b37dc0ec6c04
font_02_sfnt_off00011494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11494 11072 bytes
SHA-256: 01df53edd6669ea37ac8806c939976d2b86d16d94c203e8245ab71fdb0162083

Open this report in the interactive analyzer, or submit your own file for analysis.