PDF malware analysis — malicious · 07d9f1a27d6b02d9

MALICIOUS

PDF

95.7 KB Created: 2021-09-01 05:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 852b6c436e0493d9d66e8886f6e3d77b SHA-1: b4dfda798b005b26974d9d6616bd69471ff45c56 SHA-256: 07d9f1a27d6b02d990796259be9bf5911392e3ff3c2ad0b9ea1c7b2adec84ad2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS platforms or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links, likely for SEO poisoning or to direct users to malicious content. The presence of numerous unknown URLs suggests a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.5548

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://classicalgardenornaments.com/uplds/file/fuzozubesezo.pdf In PDF document text
- https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/4n59ocoq619fo58qg00vsi9fcs/60968607078.pdfIn PDF document text
- http://adams-gold.ru/archive/image/file/52473934711.pdfIn PDF document text
- http://antifftech.com/uploadfile/file///2021050608314917.pdfIn PDF document text
- https://afmiletisim.com/resimler/files/53945487995.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/tp716iti8i5t1basonlkttmbju/sigorebadasib.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/f0270e1d078f567dbc8a3dede4576032/telonoga.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160890cb57817d---xuriwowumubakizisasi.pdfIn PDF document text
- http://mexxeopaint.com/upload/files/fizite.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/hmjueoi1peh3rhj8lervpi01b8/wobanilelefujubul.pdfIn PDF document text
- https://fallsplat.se/file/25638718728.pdfIn PDF document text
- https://gulf-rope.com/images/bulk_images/files/45858634336.pdfIn PDF document text
- http://africa-emergence2019.com/userfiles/file/sukekamuvanodo.pdfIn PDF document text
- http://altinay-law.com/images/file/84623133580.pdfIn PDF document text
- http://buildinggodskingdom.com/webcms/file/83465345734.pdfIn PDF document text
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3318a9fa9---12932922420.pdfIn PDF document text
- http://toyteepee.com/uploadfiles/file/210527112910753844e1vf7e.pdfIn PDF document text
- http://rapabzenec.cz/obrazky/files/jonuxula.pdfIn PDF document text
- http://animationcoach.com/userfiles/file/12824792206.pdfIn PDF document text
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/h5ssi2mbjbvr9letp90em3eo7t/togejonuzozisid.pdfIn PDF document text
- https://magnanelli.com/userfiles/file/14097317029.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=song+cry+lyrics+meaningPDF link annotation
- 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_off00011b8f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B8F	18988 bytes
SHA-256: `437a815bd96fc389e0d1134de252e935b405ae628cb6478d2d2a31a0b0d01e0f`
`font_01_sfnt_off00014ce1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14CE1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000164f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x164F8	10664 bytes
SHA-256: `cc9ef9c91bd36c81fc02958dab02a86440391cc38e7709c9e5ebdacdbda4d5f8`

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