PDF malware analysis — malicious · 3b3548b7ef2342ff

MALICIOUS

PDF

79.5 KB Created: 2021-09-04 16:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 1f57f0ad6d4ba162fb6f092d2243641e SHA-1: 15b8472249117efed6f562196283739b219c9412 SHA-256: 3b3548b7ef2342ff9a04505080ef20584648d56a35cbe0f64d6b7ad31720d626

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF that contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.7900

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 http://bonezi.morefriendship.com/upload/files/roganivokagineburukibupul.pdf In PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/437673f78e124f40ecebd24364434173/11938198222.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607abe0831510---85710423662.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/e471916385f8e2e85932e0375e85b07f/renov.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e903a705a12---94266221266.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609d7e651c598---xapopafoli.pdfIn PDF document text
- http://ecohouse-lab.com/userfiles/file/kejafabivubaf.pdfIn PDF document text
- https://0286869143.com/editor_images/files/tenuvonoxalisakubesexut.pdfIn PDF document text
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4cb3348386---pimukumegirikurefo.pdfIn PDF document text
- https://vegas-shop.net/uploads/files/23609968890.pdfIn PDF document text
- http://www.asslar.de/downloads/51824633983.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/8c30c4e92f523e2021a27f2b679716d6/fomijosafunarusiweg.pdfIn PDF document text
- http://spzpoz-zdunskawola.pl/upload/file/bupuwamibebobewebo.pdfIn PDF document text
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609e72ffb49ee---ramowovakibijitewu.pdfIn PDF document text
- https://ehbo-oostkapelle.nl/userfiles/file/1970669263.pdfIn PDF document text
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/63c9c6974e263dedbf1ea9468fa84bb2/misupaxokewawasojudug.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/epgnsur5ie495g595l22ms4dm4/34918645103.pdfIn PDF document text
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9d66014f3---19417153010.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6e0d75619---8165639990.pdfIn PDF document text
- http://bcslaw.hu/admin/fck_upload/file/27677552748.pdfIn PDF document text
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0cb7b2ba4---82339541055.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/4a4724e64e24dc3b7cdc9fb9f4cf9686/giwesezebaxafevebujo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=aurat+ki+namaz+ka+tarika+sunni+pdfPDF link annotation
- 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_off0000f161.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF161	10596 bytes
SHA-256: `4e649b5a637e53541afbc66fc1fe0ec177456cce6ce5fd54e1211af9a49f2a35`
`font_01_sfnt_off00010994.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10994	23000 bytes
SHA-256: `7d37b02d1740cf5218e1de8d8853b57b5fa6ce9e5a8696cae1a7a30bf9832a8f`

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