Malicious PDF — malware analysis report

Static analysis result for SHA-256 07807e77da22d681…

MALICIOUS

PDF

72.8 KB Created: 2021-09-20 00:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8351930f806e97d870923e7d59d0d31c SHA-1: 80897143e325ffaa484fcb4c8d4eff3dc2c72364 SHA-256: 07807e77da22d681cbf1278e5376850ff447e9784d963b3f3b20d2c5a209354a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, suggesting it functions as a lure to redirect users to potentially malicious websites. The PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://nomylo.ru/uplcv?utm_term=orange+list+banting+pdf PDF link annotation
    • http://laxycoffee.com/upload/files/voburuwojirojorune.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/d24cba17085dd06264775dd919934b27/36466192636.pdfIn PDF document text
    • http://jszl-rolls.com/filespath/files/20210920050008.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/54242553908.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/9c00c67e79f3d413e912536b084a838d/76771348992.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/12485217158.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/gakopugovenofuloxutonog.pdfIn PDF document text
    • http://pcccmiennam.com/media/ftp/file/dorupaxilinodijizaw.pdfIn PDF document text
    • http://goraku-sangyo.com/userfiles/file/52355627978.pdfIn PDF document text
    • http://mskabel.cz/UserFiles/File/nadojatazanikoxogisan.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/pigitere.pdfIn PDF document text
    • http://vnndt.com/Images_upload/files/mosulofugepuvifi.pdfIn PDF document text
    • https://funbugs.ie/userfiles/file/79381893580.pdfIn PDF document text
    • http://www.jasolasia.com/image/upload/File/tavubagotutujikofixuvozu.pdfIn PDF document text
    • http://abwcrainhwy.com/uploads/files/kerijo.pdfIn PDF document text
    • http://hadt.vn/upload/files/romipojitulawibutilosodu.pdfIn PDF document text
    • http://swaptoys.org/ckeditor/uploads/files/venururiwagibidog.pdfIn PDF document text
    • http://thelifelesson.net/home/tappingchanges/public_html/dowalumniusa/ckfinder/userfiles/files/42415496733.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/45713758526.pdfIn PDF document text
    • https://ismart99.net/upload/files/megerovejutubiwinumubo.pdfIn PDF document text
    • https://adci.vn/data/upload/file/mezoxak.pdfIn PDF document text
    • https://channeloflove.com/ckfinder/userfiles/files/92092132414.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_off0000bbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBB 10720 bytes
SHA-256: 20983ab330010fae088e3c6b27ef10b7d129aed532def348f5249a7ed29b2a5a
font_01_sfnt_off0000d40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD40E 16484 bytes
SHA-256: acc5389016b9b3a77fe6ac14683e08b41088a7ec67af24c4515773801c1683f5
font_02_sfnt_off0000fe1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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