PDF malware analysis — malicious · 2c6fcc670bc5e97a

MALICIOUS

PDF

80.2 KB Created: 2021-08-17 22:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18

MD5: e80fa00fe8f4310d048948987315f73c SHA-1: be9866195cdc9fc790d1cffe801d9573705da6d0 SHA-256: 2c6fcc670bc5e97a1ca9884472dba6dafd92c00aa3245879ecdc5666141bbe61

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

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://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc3bc510ce---9156860133.pdf In PDF document text
- https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/sozarepu.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160fccd8846832---xajoregakolupegerilokuveb.pdfIn PDF document text
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/3ba57c0c7eab2bed986384cef6d7f109/baledupebujomumidetored.pdfIn PDF document text
- http://amuseonline.com/absite/userfiles/file/68086423247.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c997119532b---tetipi.pdfIn PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095bd222ce55---vezexizivivanuburi.pdfIn PDF document text
- https://bwawarszawa.pl/upload/file/pidederineruviluxelad.pdfIn PDF document text
- http://sity-luxe.ru/userfiles/file/fikenadagififajeziruj.pdfIn PDF document text
- http://otvorene-srdce.sk/userfiles/file/tuzawotesepesisuse.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee6b718148b---ligodulonokenazafu.pdfIn PDF document text
- http://cuacuonnhanh.vn/Images_upload/files/muxitew.pdfIn PDF document text
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/38aedcec7e5f2013dbddbec328164e72/potozubegabexisasusu.pdfIn PDF document text
- http://jplus-ag.com/upload/files/BodyFile__60D0609563CA6.pdfIn PDF document text
- https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/ab63381299d6716438b041a7ffc9232c/pololanukegoxelibuve.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f9c4adc80---xerobaxexazafukawusup.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083f7fd62cef---4706204958.pdfIn PDF document text
- https://paroles-vives.com/ckfinder/userfiles/files/30634469882.pdfIn PDF document text
- https://abhimaninteriors.com/ckfinder/userfiles/files/voxawusip.pdfIn PDF document text
- http://americansemitruckparts.com/d/files/xosenajuledusajaxumivegom.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927e4766732---60504185408.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16091c26a43976---9896235959.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f519e4b298---67328812366.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cc1d5c853c4879e74503b4260a41ef59/82373099125.pdfIn PDF document text
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f20806ab6c2---49085373410.pdfIn PDF document text
- https://adrfarysz.pl/userfiles/file/vuribaw.pdfIn PDF document text
- http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/15790440982.pdfIn PDF document text
- https://adepotcustom.com/UploadFiles/file/20210507000222131.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=palo+alto+panorama+vm+requirements+9.0PDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d62c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD62C	16460 bytes
SHA-256: `93d1c8bce2ed0ad4ae07a423d1147ecb44de406b392c7f6850f268f36ccdc081`
`font_01_sfnt_off000100c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100C8	11084 bytes
SHA-256: `607347131e4c09869706ac027592f5e8a72e35348c9d8d81acf4c6d86d71898e`
`font_02_sfnt_off00011aa6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AA6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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