PDF malware analysis — malicious · 76b46748536684ae

MALICIOUS

PDF

49.6 KB Created: 2021-02-24 05:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: ab201dce1ba11034fdeac6c6c2fc3e2c SHA-1: d6af59b67757c3dca3ee00897ff558b9e9b6e061 SHA-256: 76b46748536684ae16b188773daf2159679149261f76eeb53455c8e7f9d487b7

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a deceptive structure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.8642

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://leonvi.ru/strik?utm_term=maths+textbook+class+10+ncert+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4368732/normal_60279e67d4d70.pdfIn PDF document text
- http://dvertsoff.ru/74511334086mb4b1.pdfIn PDF document text
- https://mupasifuv.weebly.com/uploads/1/3/2/6/132680827/572199.pdfIn PDF document text
- http://aduo5.online/how_to_program_a_wayne_dalton_idrive_garage_door_openerayhzd.pdfIn PDF document text
- https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/tuwijaradopabulijoka.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457843/normal_5fcb22491f778.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462714/normal_60055ee40b4b1.pdfIn PDF document text
- http://capridigi.com/mevuzuzebu2oddy.pdfIn PDF document text
- https://tebojizo.weebly.com/uploads/1/3/1/4/131406069/kijavusolimez.pdfIn PDF document text
- https://mebavowu.weebly.com/uploads/1/3/4/3/134353315/d981636.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408184/normal_6010416ae4c1b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460946/normal_6007206c7d0e9.pdfIn PDF document text
- https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/7720301.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405467/normal_602d7ac38db46.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503767/normal_5ffc8a0369b6c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375504/normal_603565d0c8bf7.pdfIn PDF document text
- http://thepropheticapp.com/58638554840zro4v.pdfIn PDF document text
- https://s3.amazonaws.com/viromibukoleliw/momeletutanunudidoj.pdfIn PDF document text
- https://s3.amazonaws.com/defipedibe/dijagupofa.pdfIn PDF document text
- https://s3.amazonaws.com/sifawekujiki/xuruxopurolujarutorir.pdfIn PDF document text
- https://s3.amazonaws.com/pisedij/flo-master_sprayer_owners_manual.pdfIn PDF document text

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