PDF malware analysis — malicious · f19873efd6e6cd1e

MALICIOUS

PDF

87.2 KB Created: 2021-06-29 07:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 68a08d3f779d5cee8dc3d073344a37b5 SHA-1: e9a9dd347df12271e1fc1257a6481b5c49572815 SHA-256: f19873efd6e6cd1e9784c2508efc3f82a3bbaae72b7a7e345444d20f2d556372

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics indicate that the PDF likely attempts to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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://crewmak.ru/uplcv?utm_term=thank+you+jesus+for+your+sacrifice PDF link annotation
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c7ac85284---nanasevite.pdfIn PDF document text
- http://kinel-hunter.ru/upfiles/file/29446136693.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/62633451c8a4218941a4cc454ae6854b/wivavobozegimufokitizazu.pdfIn PDF document text
- http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608798d568ec8---zedepiludogebepuvipitotes.pdfIn PDF document text
- https://carrieres-pierre.com/userfiles/file/10115834904.pdfIn PDF document text
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160888fb26fc0c---dotiromilezun.pdfIn PDF document text
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cd09b1c2ee1---98535824272.pdfIn PDF document text
- http://cn-junsheng.com/upload/file///2021624125334503.pdfIn PDF document text
- http://kapli74.ru/upload_picture/58995345837.pdfIn PDF document text
- https://karinbentum.nl/uploads/file/10422276382.pdfIn PDF document text
- https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/16080ae1c5490d---37773061953.pdfIn PDF document text
- http://motorlustor.net/userfiles/file/90792664051.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/beab4074e5e2ca8ff18fd3414152bed0/25290367249.pdfIn PDF document text
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16090244e4f209---femuporujodawavokepafusof.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16094d196a6a1c---xunaxejamufasepujojulewa.pdfIn PDF document text
- https://altonika.pro/files/fck/file/40376167001.pdfIn PDF document text
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/7ab6cdf8998d513f3858075c0f7c12a4/bobuwalafexexobazaju.pdfIn PDF document text
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/6kptj964gionrmte6tnotlgan7/42085865264.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/544da4f1db03284e06d10d1a3556cc89/mofuto.pdfIn PDF document text
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f7a669c74---kapelenuxuz.pdfIn PDF document text
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/d5136053fa28711e497e5e367a6d84f8/padewuzawoduzizoxokibola.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8da075a337---monejilogibebuja.pdfIn PDF document text
- http://paletydozahrady.cz/ckfinder/userfiles/files/6323466507.pdfIn PDF document text
- http://asiadomainstore.com/userfiles/file/39542009992.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/662f43554232af731e22433bce165f34/87682226087.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_off0000f2c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2C6	17032 bytes
SHA-256: `811528ae48dcbe92241b162252b2d70bc67d362bf737fc8e0e0106ead1634ef9`
`font_01_sfnt_off00011ee8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11EE8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000136ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x136FF	10688 bytes
SHA-256: `d8198291f3193fc76fc4e796a7f643e554922e48df1edae774fb12c7ebaaec12`

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