PDF malware analysis — malicious · 88056dbc3c4b6b42

MALICIOUS

PDF

75.7 KB Created: 2020-12-27 16:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 1a914cbec6af07c604f71ef2cecbede0 SHA-1: 0a5b6c94ea4e3a58f3f0c0b2ee3abeef6081c838 SHA-256: 88056dbc3c4b6b425e532b22837e8e2d0f6ecfb4a70ab78424bd5bd17aaf65a6

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of embedded URLs and the ML detection strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=parachute+speckled+waffle+robe PDF link annotation
- https://cdn.sqhk.co/naxiwakiwuv/lEpgfgg/health_tips_for_seniors_article.pdfIn PDF document text
- https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/7c50fb.pdfIn PDF document text
- https://ziwuwozapa.weebly.com/uploads/1/3/4/5/134517717/9869716.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368976/normal_5f9befbe8af0d.pdfIn PDF document text
- https://cdn.sqhk.co/xufatirumina/mifgigf/logo_esport_maker_create_gaming_logo_maker_free.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410703/normal_5f9a5925550ea.pdfIn PDF document text
- https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/8788376.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/rebesudanolo/fudenovogoxamuxigi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f3435a5-9e55-4a1d-9423-116952dce2c6/gewuxevoxamukigeni.pdfIn PDF document text
- https://s3.amazonaws.com/jezobasit/karuppusamy_kuthagaitharar_movie_hd_video_songs.pdfIn PDF document text
- https://s3.amazonaws.com/tetofamuxulil/33777039004.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_off0000e8c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8C6	5540 bytes
SHA-256: `af3383f61783137de93f52f51f20dcb1721a533595e77ea7ab613be46bc07ca5`
`font_01_sfnt_off0000fba5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBA5	11456 bytes
SHA-256: `5632b5dd05f95365c60c3a13378dc2ef0d3a9aa1294d5b25c083e7510346184e`

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