PDF malware analysis — malicious · d2924bd359863aa3

MALICIOUS

PDF

70.8 KB Created: 2021-02-05 17:12:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: e08be52704798fbeb2d4dc07b9427866 SHA-1: 61639bf5a866f7766baee447730bd4238e3a8d34 SHA-256: d2924bd359863aa3d8af7d49d0f943826ea97fe94c645b5ef294a1cc0bcfccbf

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing lure. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a deceptive pretext related to a 'Fiador knot guide' to mask the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://maypoin.ru/wb?keyword=fiador%20knot%20guide PDF link annotation
- http://br1.red/candy_land_instructionsad1mi.pdfIn PDF document text
- https://cdn.sqhk.co/ravuviwidi/ichjtVo/dudufi.pdfIn PDF document text
- http://xeresorejal.iblogger.org/allah_allah_tarif_teri_song_mp4.pdfIn PDF document text
- https://cdn.sqhk.co/lomotutuwe/LihTjc7/majulezonoxepak.pdfIn PDF document text
- http://terem.space/acetilcistena_injetvel_bulaktwu9.pdfIn PDF document text
- https://cdn.sqhk.co/tinolaseja/ymhiIhd/nubox.pdfIn PDF document text
- https://cdn.sqhk.co/badalozebale/ibogeYv/rivuseterinekusuga.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/lefemijip/amassurance_claim_form.pdfIn PDF document text
- https://s3.amazonaws.com/xamapebonijos/all_arabic_letters.pdfIn PDF document text
- https://s3.amazonaws.com/muxozuvalubi/93046976298.pdfIn PDF document text
- https://s3.amazonaws.com/lebaxa/althusser_essays_on_ideology.pdfIn PDF document text
- http://xumugipetoje.epizy.com/26174678039.pdfIn PDF document text
- http://fukesok.rf.gd/bajada_de_cargas_de_un_edificio.pdfIn PDF document text
- http://tenazapuxukov.epizy.com/lugubojujowutemon.pdfIn PDF document text
- http://jexamovofu.epizy.com/dopugosi.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d94f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD94F	4800 bytes
SHA-256: `3d213ee20e766050ed5ca320526e3a1cffa42a074522180df29f275bc78a60ca`
`font_01_sfnt_off0000e9b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9B8	10980 bytes
SHA-256: `d1bac29fa82a86ff0c4da9b7bde6b90a0ea7d965caa1eb85c05a29ec5f583f5b`

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