PDF malware analysis — malicious · 61f9db8329d5d261

MALICIOUS

PDF

71.4 KB Created: 2021-01-08 09:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 61c058356f5bf30857c9cd88cfd0c8b3 SHA-1: a305a89dd638449ef760b3a19949e2e53a2b54e1 SHA-256: 61f9db8329d5d261a53ebd711a3e9830da79b49cff6a7f3fdb7deac53c4dde9d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that redirects to a page discussing an 'asthma attack video', likely a lure to trick users into clicking. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the nature of the content suggest a phishing attempt designed to lead users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/aws?utm_term=asthma+attack+video PDF link annotation
- https://bodujifoji.weebly.com/uploads/1/3/5/3/135394102/vaxog.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496381/normal_5fcf09207f306.pdfIn PDF document text
- https://kesamitowusiniw.weebly.com/uploads/1/3/4/4/134441112/4195788.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371508/normal_5f9d72eb66570.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379841/normal_5f8bedddcea3d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393028/normal_5fc44141196f8.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/jiguwuzobozobaz/gw2_skyscale_scales_guide.pdfIn PDF document text
- https://s3.amazonaws.com/xakusineba/gadumozusefu.pdfIn PDF document text
- https://s3.amazonaws.com/zumomasugipeno/fallout_3_special_build_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1cf61c27-0736-4655-8135-e9530e3f0f85/extreme_car_racing_3d_mod_apk_download.pdfIn PDF document text
- https://medlineplus.gov/asthma.htmlIn 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_off0000dba4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBA4	5164 bytes
SHA-256: `28bbe2ce1cd0ce7653a639702740e7e150be0e09331db6a3f528381eb30358f6`
`font_01_sfnt_off0000ed14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED14	10692 bytes
SHA-256: `50bb98ed321215f2b8f58c2a1536954253c597ee8d06a62a751e8a878591704e`

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