PDF malware analysis — malicious · 543e03b727cb6ada

MALICIOUS

PDF

65.4 KB Created: 2021-03-19 18:34:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dce34f85b612c4c9efb1a20340c9d66b SHA-1: adf02245f84ca9f7164d9891d5b8365dba4ad311 SHA-256: 543e03b727cb6adaa5e598123c574febc4290576627661b7016bf0d1952a8222

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to various domains. The ClamAV detection and ML classifier also indicate maliciousness. While no scripts were explicitly extracted, the presence of numerous external URLs suggests an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.8603

Heuristics 4

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://druttle.ru/award?keyword=hebrew+alphabet+flash+cards+pdf
- http://domainlimax.xyz/samsung_un32j5205afxza_specsag0l8.pdf
- http://logoped-samara.ru/netgear_wndr3700_access_point_mode1ji45.pdf
- http://lisolu.org/7800907364116ao5.pdf
- https://mefifusefom.weebly.com/uploads/1/3/4/2/134266023/fumafo_felekexufe_vijuwo.pdf
- https://sowupetu.weebly.com/uploads/1/3/0/7/130739285/42128c544a8.pdf
- https://cdn.sqhk.co/sifalavuxozo/jgTjhvx/wifi_software_for_windows_7_free_download.pdf
- https://cdn.sqhk.co/pevizopubok/kjehere/40370130520.pdf
- http://ital-girl.space/avery_label_design_softwareoh462.pdf
- http://feedbacrnz.space/50799775410cf6kv.pdf
- http://tdsevsvet.ru/2001_lexus_es300_headlight_not_workingit4sc.pdf
- http://metryck.info/international_human_resource_management_book_by_aswathappa_free_downloadt5itn.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_e569fdbcd3664005b6bd05ac48491577.pdf?index=true
- https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_312a52aef3f94ea3aa355f57d3ab082a.pdf?index=true
- https://f9cb7010-568c-45d0-b0a5-7bd630b60272.filesusr.com/ugd/b10ea2_3eebd83249844a6d9ddf48d81ee97428.pdf?index=true
- https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_3bb9c41f13a74059835838f084ecb3b4.pdf?index=true
- https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_fa0fba75dac24bdb9a812667110bf495.pdf?index=true
- https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_7e991030d85b4cdd80ed6da011203ef8.pdf?index=true
- https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_e5dc75958b0248589c24b95e11976315.pdf?index=true
- https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_1f6a045a964e4b4db7006f02a20e5ef7.pdf?index=true
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e24f.bin` `763d65c906fcd87df3f7885679a451e3528c5cd4afa74e333e8cc4c08089cec7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE24F	5436 bytes

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