PDF malware analysis — malicious · dc32c908b6bbfc85

MALICIOUS

PDF

70.0 KB Created: 2020-11-11 23:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: f93f2b0c693c8e0c4b3d9b51d6da0a6b SHA-1: 18d16e371c1b47476e252ec82fe85bfaca974992 SHA-256: dc32c908b6bbfc854f968187db4fb82d7f51fdb08267c5dbf89f87dc14334665

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a phishing domain, likely intended to trick users into downloading further malicious content or providing sensitive information. The document body, though heavily obfuscated, suggests a lure related to 'capital one case interview pdf'. No scripts were extracted, but the presence of a malicious URL and the overall detection profile strongly indicate a phishing attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/strik?utm_term=capital+one+case+interview+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4389384/normal_5f97945a1e1fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366357/normal_5f8deebc122b3.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/jedaxopopuko/55336720426.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bec86ca3-d5a8-4c5c-a3e5-bd8b68443623/56871023496.pdfIn PDF document text
- https://s3.amazonaws.com/wiwuxot/anonymous_script_oracle.pdfIn PDF document text
- https://s3.amazonaws.com/magapeguwabe/common_prefixes_and_suffixes.pdfIn PDF document text
- https://s3.amazonaws.com/xanebavifamopez/1683477853.pdfIn PDF document text
- https://s3.amazonaws.com/remufuzu/34437124964.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe1e2dd1-8c3b-4fb2-a9b4-13a9b60c4038/bamawubalemigubinete.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4a0abd5-bb56-43e8-b85c-075c24ffe068/42580556307.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_off0000d77b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD77B	5204 bytes
SHA-256: `ea0f1c8cade5129290f1f1e24a7c95692da2eecd972a2c7ad384d8030dd4aba2`
`font_01_sfnt_off0000e94c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE94C	10176 bytes
SHA-256: `9301631c4f3737dffeeac28451d5617f8b699a2f9401f239e8ccf3b92cce5c86`

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