Malicious PDF — malware analysis report

Static analysis result for SHA-256 6179e4b2f96e5039…

MALICIOUS

PDF

79.6 KB Created: 2021-09-09 02:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9107bfc27ae0c734dd7fad7587c75b36 SHA-1: 212f53110cc722ac50a80537bc0530404c63c527 SHA-256: 6179e4b2f96e5039023c3e49a0b8905df48ad27116030c26ce15c54f05d93caa
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the structure and embedded URLs point towards a phishing lure designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pistant.ru/uplcv?utm_term=nlearn+app+apk PDF link annotation
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebaa500937---70768470663.pdfIn PDF document text
    • https://parfumzone.ro/files/file/lorifaxuxoro.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/zotidejovipovagajuxe.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/69806621163.pdfIn PDF document text
    • http://farmaciacogliate.it/userfiles/files/pebagoso.pdfIn PDF document text
    • http://factblogs.com/uploaded_files/userfiles/files/sejaluzoku.pdfIn PDF document text
    • http://clubsahdianagalati.ro/upload/editor/file/53608017710.pdfIn PDF document text
    • http://vkp.ru/upload/global/file/43599122563.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/5611874023.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/jimexokuwusen.pdfIn PDF document text
    • http://abnicum.ru/files/file/3379189156.pdfIn PDF document text
    • http://termosystem.pl/userfiles/file/93234819595.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/megonojusufaxewise.pdfIn PDF document text
    • https://zoldlaptop.hu/ckfinder/userfiles/files/37532070504.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/gukiwimodetawulugi.pdfIn PDF document text
    • http://moskvaznaet.ru/upload/files/mekusolid.pdfIn PDF document text
    • https://oreopay57.com/ckfinder/userfiles/files/46552353608.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/21342006833.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/80d1891f2e833154fae61ba148f6fbf9/96552385243.pdfIn PDF document text
    • http://jolanyee.com/upload/files/202109030224394717.pdfIn PDF document text
    • http://mopi.eu/ckfinder/userfiles/files/butomigozarilelebi.pdfIn PDF document text
    • http://www.clc-engineering.com/siteuploads/editorimg/file/67808761725.pdfIn PDF document text
    • http://wimborst-ceramics.nl/ckeditor/ckfinder/userfiles/files/68591944126.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_off0000d2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B6 9836 bytes
SHA-256: da73934f1256d31cff6a44fbaa3f3d418bc9c3ec1f09a9cf0eeac363b6fa63fc
font_01_sfnt_off0000e864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE864 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10076 18672 bytes
SHA-256: 6900e30d1f31e4c1e09f14a7ce09029751de23160e40e80cf6c18c4dc1f657e8

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