Malicious PDF — malware analysis report

Static analysis result for SHA-256 335c6e415206238b…

MALICIOUS

PDF

83.4 KB Created: 2021-09-16 07:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 0d288b5cdf579119fff11fd8bdc37c8d SHA-1: a4b0f84937821b171fd684326f69e0deab567e41 SHA-256: 335c6e415206238b5ab33bf88aaab52f3896b42a7f17f9d8565b52cd6b1daf89
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting it's designed to redirect users to potentially harmful content. The presence of urgency language further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nomylo.ru/uplcv?utm_term=hill+climb+car+game+download PDF link annotation
    • http://xn--o79av69abka850ab6c.com/upload/file/202109141900245243.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/xegigunu.pdfIn PDF document text
    • http://spartaksedlec.cz/spartaksedlec/userfiles/file/50391916658.pdfIn PDF document text
    • https://pracowniatechart.pl/fckpliki/file/memal.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/51910364815.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/wasagagogedosepojowukoko.pdfIn PDF document text
    • http://stillincontact.com/images/mails/file/29229062997.pdfIn PDF document text
    • http://kxxbs.com/uploadfiles/file/a/xeguni.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139841064060---32930045083.pdfIn PDF document text
    • http://medob.org/SITE/files/editor/file/notolokijemeset.pdfIn PDF document text
    • https://lideregitimpaketleri.com/calisma2/files/uploads/relijagozoxukoxoguku.pdfIn PDF document text
    • http://synagoge-stommeln.de/ckfinder/userfiles/files/30647157804.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/taxafenitigixomumigabukef.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/kenitavikipufip.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/20219121747151350.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/15528679652.pdfIn PDF document text
    • http://www.sm.ac.th/ckfinder/userfiles/files/37504872415.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/162090284.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/98925f7e1774133b7bfd0e046407cea3/nekadawux.pdfIn PDF document text
    • http://bellamy.tw/uploads/files/202109050736585685.pdfIn PDF document text
    • https://saintarseny.ca/sites/saintarseny.ca/files/file/99928971121.pdfIn PDF document text
    • https://malmospelmanslag.se/userfiles/file/42649227574.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_off0000e2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000faf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF7 10664 bytes
SHA-256: 33c985e1daff7f344d64660fbc049b14f4b29f0ff65893e3dfce5ec4ca6b4b24
font_02_sfnt_off0001131b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131B 17540 bytes
SHA-256: da4298b44f4e74501685de096ff3aaacd1574cb72ae90cf3727c40b766fc2b93

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