PDF malware analysis — malicious · 4fd4c41e0100052e

MALICIOUS

PDF

57.0 KB Created: 2021-04-08 17:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 70e028208f59927cfe28801285c884ef SHA-1: 7df4887242b0e1f660c9347fe0ce33cead9de1ea SHA-256: 4fd4c41e0100052ea1aa2d30701c48f19d97f7b7bee831be9275f7bc26445d62

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs, many of which point to disposable hosting services and are designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a lure to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.7030

Heuristics 4

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://midufefew.ru/strik?utm_term=hess+law+problems+with+solutions+pdf PDF link annotation
- https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/dozeduna.pdfIn PDF document text
- https://tekovotobu.weebly.com/uploads/1/3/5/3/135319939/sulezisojuvezazemo.pdfIn PDF document text
- https://nukijevexumi.weebly.com/uploads/1/3/4/7/134714394/fudonat.pdfIn PDF document text
- http://bajoxuj.22web.org/gelenowozesirojalifavexo.pdfIn PDF document text
- https://karadirivesu.weebly.com/uploads/1/3/1/4/131407010/mivogokeveme-fujadafumasupo-mipinif.pdfIn PDF document text
- https://faxomozux.weebly.com/uploads/1/3/0/7/130775398/domajif.pdfIn PDF document text
- http://wufutawolemipa.22web.org/nand_logic_gate.pdfIn PDF document text
- https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/xolebebuluzo_kudeseditive.pdfIn PDF document text
- http://pozisez.rf.gd/skilsaw_circular_saw_blade_lock.pdfIn PDF document text
- http://dozuxix.myartsonline.com/detunezazixuzogewarope.pdfIn PDF document text
- http://raburuterurova.rf.gd/sadibipeveti.pdfIn PDF document text
- http://wekaniloba.rf.gd/books_of_the_bible_list_printable.pdfIn PDF document text
- https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_ed4fc982f3f242e6b98fc7f1041faa17.pdf?index=trueIn PDF document text
- http://laposul.rf.gd/bogan_movie_songs_starmusiq.pdfIn PDF document text
- http://goxafebo.myartsonline.com/intentionally_blank_page.pdfIn PDF document text
- http://povosiz.epizy.com/5443183920.pdfIn PDF document text
- https://fd7a53fe-11c1-4e60-83ad-ac1bb997268f.filesusr.com/ugd/5cf23b_37ac923b151e46d599febbe7aff71979.pdf?index=trueIn PDF document text
- http://deketinak.rf.gd/40900359891.pdfIn PDF document text
- http://gevekesudizare.epizy.com/meme_meme_yadavulam_audio_song.pdfIn PDF document text
- http://kapugekemasili.rf.gd/75211068329.pdfIn PDF document text

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