PDF malware analysis — malicious · cfa2a5c7a490b870

MALICIOUS

PDF

90.2 KB Created: 2021-08-07 07:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 96b18c514525ad3b4b438aa92339a361 SHA-1: 19edd9a94fac6fd28ac1d5658e37aeed66d8c2b0 SHA-256: cfa2a5c7a490b870fbcbd4fac4700d8a55953bd235a7093fbbe8ee510cb66315

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to distribute malicious content or redirect users to phishing sites. While no scripts were directly extracted, the nature of the link farm and the detection names imply a phishing or trojan distribution vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9914

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 http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f825e6357fc---nipelorokori.pdf In PDF document text
- http://daindnc.com/fckeditor/userfiles/file/kosikif.pdfIn PDF document text
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/4298e5f8825aa15fc8e05d8aa0cbc26e/jojovafuwabis.pdfIn PDF document text
- https://sitycare.com/FCK-UserFiles/files/27413927549.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6f942bd19---60234296053.pdfIn PDF document text
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6797b742---47296629344.pdfIn PDF document text
- http://sns-russia.ru/userfiles/file/mesejilifunawawaj.pdfIn PDF document text
- http://princeworldwide.com/multimedia/userfiles/file/zemumosujabipa.pdfIn PDF document text
- http://malbreil.com/userfiles/file/detexigudojuluxobusola.pdfIn PDF document text
- http://archinfo.ru/uploads/file/61566681252.pdfIn PDF document text
- http://bacvietexpress.com/upload/userfiles/files/zujojenikixenikef.pdfIn PDF document text
- http://cuatro-pr.org/sites/default/files/file/62618630389.pdfIn PDF document text
- http://www.skk.com.hk/admin/ckfinder/userfiles/files/82999865237.pdfIn PDF document text
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/9de9toehdfq495g80dftnp3b6e/8751179330.pdfIn PDF document text
- http://hzkontejnery.cz/ckfinder/userfiles/files/12213014645.pdfIn PDF document text
- https://dogathermalhotel.com/resimler/files/89371231068.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/17c067c990e1dadda7d2ba8aa8f2055a/furetobid.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f169967b9f---78008633666.pdfIn PDF document text
- http://ekotop.eu/userfiles/file/ximexetulaferusalatuk.pdfIn PDF document text
- https://olympicwroclaw.pl/zdjecia/fck/file/novemamofonevozir.pdfIn PDF document text
- https://unosms.us/userfiles/file/gobojomikapitinazupitake.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2936423f8---59668258469.pdfIn PDF document text
- http://szentimresiklos.hu/upload/file/13758846961.pdfIn PDF document text
- https://mamo-tato.ro/userfiles/file/58614355332.pdfIn PDF document text
- http://www.dogwoodagility.nl/ckfinder/userfiles/files/28977026815.pdfIn PDF document text
- http://growlink.biz/userfiles/file/wepazes.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=can+i+make+rice+pudding+with+sweetened+condensed+milkPDF link annotation
- 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eec7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEC7	17296 bytes
SHA-256: `4ed9e120cc949a22f0c1124a27bca6e709bae7678396ef02a18df8c4ed446ea6`
`font_01_sfnt_off00011c25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C25	11268 bytes
SHA-256: `5533a36026d55a7047e45ccdb184e1f7a31e04f5cced7c39fa537df677a7cb4f`
`font_02_sfnt_off00013635.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13635	2088 bytes
SHA-256: `1649263070fbbef60204070de7418475faa76f32e66ac0948d6c38b905fd52c2`
`font_03_sfnt_off00013f8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F8D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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