PDF malware analysis — malicious · 5bb1abfb64caa697

MALICIOUS

PDF

75.9 KB Created: 2021-07-02 12:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: bcc25963833f82310af5a0b3d06bf8b6 SHA-1: 9a080944017651cd75974b3d08837b734df77419 SHA-256: 5bb1abfb64caa697fbfb5ee09fbe411b92c237cf42909f2c49cb2424236c41d7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Multiple heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, such as 'https://oniceh.ru/uplcv?utm_term=the+flavor+bible+pdf+free+download', are likely used to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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://oniceh.ru/uplcv?utm_term=the+flavor+bible+pdf+free+download PDF link annotation
- http://yeosingol.com/FileData/ckfinder/files/20210624_BE0F9B9B8CC5C57C.pdfIn PDF document text
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/c13952ba0c6608545a1304a631d8992a/binutobide.pdfIn PDF document text
- http://littlepearlbooks.in/data/eimages/file/redujidomabifotuzisojagon.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cc96639cd59---kewut.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/65d1424f12a06145f956cad8bad12b93/bimadodebisexizi.pdfIn PDF document text
- http://jnnycc.org/userfiles/file/timebexegesuzenoses.pdfIn PDF document text
- https://toananhmedical.com/uploads/files/dazasajiwunufatexevo.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/6q8r51ph1fsqnv14golv7hjf25/gorurexeviwopefezizusef.pdfIn PDF document text
- http://baraanduliaptti.org/userfiles/file/87834517994.pdfIn PDF document text
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/b5571f2d1ceb6b4557cbbfbde0bae24b/20542462940.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607689a18487f---depom.pdfIn PDF document text
- http://furniture83.com/upload/files/78301206187.pdfIn PDF document text
- http://pinzimoniofiumicino.eu/userfiles/files/27957943315.pdfIn PDF document text
- http://ztkammer.at/uploads/file/97701846660.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160719f3866e52---garezitigikopojumado.pdfIn PDF document text
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/8203gn86lipehktlf3vkhahb57/lejorif.pdfIn PDF document text
- https://myarchitect.es/ckfinder/userfiles/files/54800212111.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6c7cafc51---ririrewowom.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/d13b55c726d407814abdfbf7ea3635f8/83537792548.pdfIn PDF document text
- http://ats-dz.com/userfiles/file/sumoko.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/b5ee4a8c476f6a0c2071d6044a02723a/rudurobajamunemej.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/5sijb28e80abtdns5tvg633tga/66177220957.pdfIn PDF document text
- http://mpti.ru/userfiles/file/wagakor.pdfIn PDF document text
- https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/hrh582ef3q0sqnujerjtpjg471/xuwenawitagepelibud.pdfIn PDF document text
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/84eeb01dc7149ba9afcc7b51f333a50b/finonador.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c5dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5DD	16928 bytes
SHA-256: `68676fde5e4fb92b6090f9b474722232671a69b772ea3f72152d67fe47e65e03`
`font_01_sfnt_off0000f232.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF232	10584 bytes
SHA-256: `a58c40016be654c4ca4bdc13ff472cc3d2ff4ebc58ed222d528aa2b553c037fe`
`font_02_sfnt_off00010a0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A0E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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