PDF malware analysis — malicious · 3613b2ce6f15de2a

MALICIOUS

PDF

85.0 KB Created: 2021-06-27 00:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: c060a1bbe8f0113f90b65c63b300eff9 SHA-1: 60061c2a5e208a3ecc48cb952f02d0db74c40597 SHA-256: 3613b2ce6f15de2a03ed6ea5aacd4153879dc08632090d8ab262d7a1a32d2e20

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute malicious files. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of numerous links to PDF files on various domains indicates a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://artdealer.vn/upload/fckimagesfile/04aea66fd688b6b67d3cb7205b8cf155.pdf In PDF document text
- http://freehajjandumrah.com/admin/admin/uploadfiles/file/72009700688.pdfIn PDF document text
- https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/dn2he7o4tusu99rtg2806toa9e/68678260171.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a256b6e7476---besolusigoju.pdfIn PDF document text
- http://bjaimama.com/data/upload/2021/06/file/202106030944278382.pdfIn PDF document text
- https://airshow-bg.com/file/tibijodetoporazeju.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607049b007966---medolu.pdfIn PDF document text
- http://jump360.co/upload/files/20210609084748.pdfIn PDF document text
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d0a65fe60---detedoxusizapagu.pdfIn PDF document text
- https://hitourkorea.com/FileData/ckfinder/files/20210614_44E615AE657CABEE.pdfIn PDF document text
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080124625088---7641619530.pdfIn PDF document text
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ad99ab37c54---wiwederokajepepusalunafe.pdfIn PDF document text
- https://www.passion-rnd.com/upfile/files/2021/06/26/32650007257.pdfIn PDF document text
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/5f5ac738d956f6565b85fcffc5e9d270/jimofemigopumexax.pdfIn PDF document text
- https://mecaniquekd.ca/upload/file/6514386797.pdfIn PDF document text
- http://kstarsmall.net/userfiles/file///dobakivoxekep.pdfIn PDF document text
- http://kingalbertltd.com/uploadedfiles/file/mugikuwivet.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095de996fffa---15991349981.pdfIn PDF document text
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/210da5cf9164f54fb4cf51b0bc213cd5/83420190041.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/6f4ccb087a06ebe88012e2e170a0a07b/61413267419.pdfIn PDF document text
- http://nuestratierrapremios.com/campannas/file/39609795165.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97bbc71b44---42470524573.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a588254d8ed---72952636127.pdfIn PDF document text
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/66483541860a6f9fa3530b.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/58211e968da38dc5383b79cdec4e7119/8541279721.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=fifa+15+mobile+apk+downloadPDF 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_off0000eb61.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB61	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010378.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10378	10776 bytes
SHA-256: `d0718b664bd87ceb83108d063c7bf53e7db1af11b6d56a2fea762e01d2b7b163`
`font_02_sfnt_off00011c16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C16	16412 bytes
SHA-256: `cfebe46942ad3ed4426675973ca1069500de2609cf55ed131bcfb0422e9f3d6c`

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