PDF malware analysis — malicious · 3f506229ee6293cc

MALICIOUS

PDF

86.8 KB Created: 2021-09-02 10:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 02b36fa8c39f346078ec6398b587be41 SHA-1: 185bf9cd5126eaab6cdf9e8d29847e500a606747 SHA-256: 3f506229ee6293cc86052be62fbc8cf952197af7c74e54f472ea11efc4da8865

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. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or phishing lure. The PDF structure and embedded content are consistent with malware distribution tactics, likely serving as a first-stage payload to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://yournew.site/wp-content/plugins/super-forms/uploads/php/files/om9ib8fnsghlc555cr7cr0onp5/17464641568.pdf In PDF document text
- https://noihoithanhtuan.com/media/ftp/file/megiwomikabuso.pdfIn PDF document text
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/gsui9d5vdvdr0j7octoeae5h16/kapipowivumaderi.pdfIn PDF document text
- http://asdgolfclubtoscana.com/writable/public/userfiles/file/sirusawebetobugaxis.pdfIn PDF document text
- https://jensbrode.de/files/file/siginalaxovuwozezekefafiw.pdfIn PDF document text
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160721298166a9---78131396793.pdfIn PDF document text
- https://newshieldinsurance.com/demo/gsa/final/images/file/jaximisu.pdfIn PDF document text
- http://xn--54-dlcdkamdj4btild5b.xn--p1ai/ckfinder/userfiles/files/kidizaveforofibebu.pdfIn PDF document text
- https://masukpt1.com/contents//files/8468252191.pdfIn PDF document text
- http://softwaretesting.kr/club/data/userfiles/file/20210822065728.pdfIn PDF document text
- https://rzfmuhasebe.com/userfiles/file/35015768808.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/041a99b4085eb99c105c43c64f9dbe91/zibowixesif.pdfIn PDF document text
- http://doktor-okonski.pl/uploadimg/file/nagilixusisunoj.pdfIn PDF document text
- http://emons-verlag.net/testarea/cwsCMSlight/media/files/pumuwilotagovawi.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/0e432880fc41ff75f1498e117190ac77/nesokimisodekinilag.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2272e900e---zegopesif.pdfIn PDF document text
- http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0179db6ea---52268564478.pdfIn PDF document text
- http://blgjad.com/upload/files/54392349541.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/57285421493.pdfIn PDF document text
- http://eco-versute.com/app/webroot/ckfinder/userfiles/files/7569164324.pdfIn PDF document text
- https://otoform.com/upload/ckfinder/files/lokesemiwe.pdfIn PDF document text
- https://didacostruzioni.it/userfiles/file/pipanawesopa.pdfIn PDF document text
- http://5lovestartw.com/CKEdit/upload/files/nubemafenarutedan.pdfIn PDF document text
- http://coimbra.hu/uploads/ckfinder/userfiles/files/94903779464.pdfIn PDF document text
- http://www.gabrielamaciel.net/images/content/file/59070891522.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=highest+iq+personality+typePDF 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_off0000ec11.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC11	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010423.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10423	18416 bytes
SHA-256: `6788eb59636856cd13740433bdeec0be05b39bfdfb441dfd268870387126df60`
`font_02_sfnt_off00013304.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13304	10780 bytes
SHA-256: `e101d13e858a4a22f251977b851f1e940d00c5ed7d868cf60953e52a6907f415`

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