PDF malware analysis — malicious · 1ab5e45338593963

MALICIOUS

PDF

79.7 KB Created: 2021-08-04 05:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: def46ab986da35480dd6ce71f7128b20 SHA-1: 572e4921a135c238b827f0b19bb66a42591ab051 SHA-256: 1ab5e45338593963387e96708518e1a730fafce5970461103a32a19980e6ce3b

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The file's structure and URL patterns are indicative of a phishing or SEO spam campaign, likely delivered as an attachment.

Machine Learning

Nyx PDF Classifier suspicious score 0.3497

Heuristics 5

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
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://drafthe.ru/uplcv?utm_term=cen+tech+obd2+scanner+60694 PDF link annotation
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/s5q4nev7mce938bjvon2n4fecf/79139222298.pdfIn PDF document text
- http://doks-films.com/pcms/content/file/89693275441.pdfIn PDF document text
- https://sonarmusic.hu/up_image/file/watewibugoxa.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b82fd1469---57636039524.pdfIn PDF document text
- https://nbtele.com/en/cache/fck_files/file/dasolexojives.pdfIn PDF document text
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d80bdeb04b---47124686101.pdfIn PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/c4qpj3npi2tf8fd7v9ao0gur4o/45968240571.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/432845e1b73875d9646143790d4efd01/491160155.pdfIn PDF document text
- https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/8644d8c58d13c0920a89f566cb7c90af/96330654889.pdfIn PDF document text
- http://drthchowdary.net/userfiles/file/62349401206.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/48ecb38f8778ddb4ad8d0709a152226c/42714773285.pdfIn PDF document text
- http://daiichibus.vn/uploads/news_file/80141729138.pdfIn PDF document text
- http://futurepoolandspa.com/ckfinder/userfiles/files/73925775587.pdfIn PDF document text
- https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/latibovapewomugu.pdfIn PDF document text
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160899a7492b0c---60001365151.pdfIn PDF document text
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac79ea290b2---nejifogakabiwo.pdfIn PDF document text
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/a7c3hh1prf8cl9bbdrv6urfmsd/birepazabi.pdfIn PDF document text
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/cfb9ce32974a63fd2e1da3e1998e10c8/56324727922.pdfIn PDF document text
- https://sy-tech.eu/file/selodokitan.pdfIn PDF document text
- https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/85480f0406e0747fc5a6cb33d9de1f8c/48964575683.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/ddblcbls6q25tv5ktocpa7kkmn/22815569969.pdfIn PDF document text
- http://moreit.ch/productinfo/file/28438998728.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943b686aa6c---6022431143.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f89c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF89C	17908 bytes
SHA-256: `98d1ad2f29cc1aec80c05d9039ad5a8de1fda230c5833b6e4a7437b928bfbf1b`
`font_01_sfnt_off000126b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126B3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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