PDF malware analysis — malicious · f28a11e86bd1c138

MALICIOUS

PDF

65.8 KB Created: 2020-12-02 21:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 33395a9c86690ada882b7be5a2e472f7 SHA-1: ba83d30ac7130d665c70cbd2d64f2bb87c8e94bb SHA-256: f28a11e86bd1c13862deac247e7d9d5105f947c7d075ff354504ba55ea4b0874

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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=biomedical+scientist+salary+per+hour PDF link annotation
- https://kemumapuvepuvi.weebly.com/uploads/1/3/4/3/134311950/ratezepiwobizow-kilin-kenavedotu-jutano.pdfIn PDF document text
- https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/suwererixok.pdfIn PDF document text
- https://seguronudolag.weebly.com/uploads/1/3/4/4/134468074/mekaxipumoreni.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9b58ac7a-2566-4c43-93f1-3274308b3678/41895071066.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/40ec2ebe-c0af-4748-80d6-a52f597bcc63/dezofonuvobaxepu.pdfIn PDF document text
- https://s3.amazonaws.com/vinivuxo/nodezorutijotun.pdfIn PDF document text
- https://s3.amazonaws.com/jeromopelurab/mavulexopilevari.pdfIn PDF document text
- https://s3.amazonaws.com/ganubatebedoxez/60946072264.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/51cdd00e-a149-4e9e-ba8e-56dd7eeae724/tamebufaworatugotewug.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8935da99-42bf-42f9-b40c-475b0f9fed9c/19709428617.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_off0000c54c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC54C	5464 bytes
SHA-256: `43033002a8209dbf4202b90f40fed7cd42de6684b193e583ca42efc162f1a0e9`
`font_01_sfnt_off0000d7ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7BA	10168 bytes
SHA-256: `535fb4c964d392d84533b62271c336f0dd7e993c94f1f259f867d2230a7fd6d3`

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