PDF malware analysis — malicious · f3dca42c85448152

MALICIOUS

PDF

62.7 KB Created: 2021-03-26 06:37:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ca0a951decd8154567ab5449bc340467 SHA-1: 0170198d3cd440154844684333e7b37a794c3cfa SHA-256: f3dca42c85448152097eee6cc7ded73ea97d0eb2051360f9aa4c0c032d942ae7

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, suggesting it is part of a link farm designed to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9614

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://baarspo.ru/award?keyword=uber+logo+guidelines+pdf
- https://faporipito.weebly.com/uploads/1/3/4/6/134600592/buruguduzoz_femovojazesi_miluvij_vofepuw.pdf
- https://cdn-cms.f-static.net/uploads/4387825/normal_5fda51f39473e.pdf
- http://gekifek.scienceontheweb.net/93083472899.pdf
- https://furedanoduribi.weebly.com/uploads/1/3/4/6/134681858/6341479.pdf
- http://tokesuditetu.getenjoyment.net/delta_table_saw_fence_upgrade.pdf
- https://dowusezawidi.weebly.com/uploads/1/3/3/9/133997386/693754.pdf
- https://cdn-cms.f-static.net/uploads/4382613/normal_6016b499e669f.pdf
- http://gilumesu.mypressonline.com/bengali_to_english_dictionary_download.pdf
- http://gowanenutik.mypressonline.com/selenium_python_tutorial_pycharm.pdf
- https://cdn-cms.f-static.net/uploads/4426279/normal_6058906dc149f.pdf
- https://static.s123-cdn-static.com/uploads/4470985/normal_5fe4d7270c956.pdf
- http://waralolojogeta.sportsontheweb.net/pifutonapubolewi.pdf
- https://nofuwotepilob.weebly.com/uploads/1/3/1/6/131636733/4941231.pdf
- https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_44c31405387b4facbd739718c0074eca.pdf?index=true
- https://dca540c6-954d-4243-9f09-0921753db957.filesusr.com/ugd/974a4e_a07abb84b2864d4384259266465674bf.pdf?index=true
- https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_7ef0d30b5555455a9eb4bf807edd5e66.pdf?index=true
- http://nabulegewuwal.myartsonline.com/babotozavipabejesobipofab.pdf
- http://gedamodeges.epizy.com/bo4_ancient_evil_wonder_weapon_guide.pdf
- http://bivapimoxulo.epizy.com/how_do_tall_buildings_stay_standing.pdf
- https://2b08c346-38d8-4763-b559-bb9d4fff2313.filesusr.com/ugd/40c9d6_8c92e8eaecbf464cbe35806415d92261.pdf?index=true

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