Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8641401117b8240…

MALICIOUS

PDF

85.0 KB Created: 2021-09-15 22:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 11006b0d423b533b1ae8ee2f248a86a8 SHA-1: 41740e982ceefec4f0eca5192e7a4e7fdb3a3723 SHA-256: d8641401117b82404ed2fada694f652b23585747b4c97bfd71caffd4e584b95f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external URIs and link farm heuristics, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded URLs are likely used to redirect users to malicious sites, potentially for credential harvesting or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pixomot.ru/uplcv?utm_term=the+avengers+end+game+streaming PDF link annotation
    • https://satbietthu.com/luutru/files/rowakow.pdfIn PDF document text
    • http://wmasgroup.com/userfiles/file/61516606996.pdfIn PDF document text
    • https://knoxvilleremembers.com/media/41193300294.pdfIn PDF document text
    • http://davobio.com/upload/files/tuzovesukipevo.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/tivekobube.pdfIn PDF document text
    • https://speak82.com/_UploadFile/Images/file/70205362701.pdfIn PDF document text
    • http://anpo.vn/upload/files/69264522982.pdfIn PDF document text
    • https://suprizpin.com/calisma2/files/uploads/kunowu.pdfIn PDF document text
    • http://laboratorioshamalab.com/userfiles/file/dimilekujovujetibadip.pdfIn PDF document text
    • https://dragonexpressml.com/userfiles/files/xevomumoxunej.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/33388323172.pdfIn PDF document text
    • http://shangrilatheshow.com/ckfinder/userfiles/files/gejobosalinulamabafam.pdfIn PDF document text
    • https://alwillislifecenter.org/ckfinder/userfiles/files/20414593070.pdfIn PDF document text
    • http://seritour.com/rsm/files/gibabafugivofofexi.pdfIn PDF document text
    • http://abarappresentanze.it/userfiles/files/joguxafu.pdfIn PDF document text
    • http://pogotowienaukowe.com/Upload/file/9733767377.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613130bf3cec6---74359834748.pdfIn PDF document text
    • https://quangcaowebsitecomvn.xemlaco.com/uploads/files/71989990379.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130737250a19---71219207256.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4666c8e5a---vegesegovel.pdfIn PDF document text
    • http://otelm4b.ru/admin/ckfinder/userfiles/files/51089575241.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613fac1cb56ca---64803215170.pdfIn PDF document text
    • https://kfk-dekoration.dk/images/uploadedimages/file/zixajovaresolozarosurep.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/8faf32a8ac5ebf2d1b5dacb0e4a82761/131187385.pdfIn PDF document text
    • http://crimesla.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dijunutimidazavopikigu.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_off0000ea8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 17100 bytes
SHA-256: 3025194e6fd7fc523e9bd2c271d11d8b0acc863ea499d7575ba0bdc068afa767
font_01_sfnt_off000116d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EED 10556 bytes
SHA-256: 5ed3173b338ab873b536b1e498b60c99136520afe6a3a3d27cc770958888175d

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