PDF malware analysis — malicious · cfc9c68c86d8f9ee

MALICIOUS

PDF

69.0 KB Created: 2020-12-25 02:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: d25c483ffb89efa74f07d5d9364eb5a1 SHA-1: 17b18ecaac8a8edc1ec853bea47ace9916edcbe4 SHA-256: cfc9c68c86d8f9ee4012c018b3f51ad8dd0669a0b401bf0e9afc0629a9c8ea61

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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/123?utm_term=business+check+binder+7+ring PDF link annotation
- https://cdn-cms.f-static.net/uploads/4387590/normal_5f90344448b4d.pdfIn PDF document text
- https://bokobuduvi.weebly.com/uploads/1/3/5/3/135347682/gurixa.pdfIn PDF document text
- https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/tusiwisotoloko_dizofipa_nuxer.pdfIn PDF document text
- https://mijuzitomos.weebly.com/uploads/1/3/4/6/134662295/zepob_zamiwarekakura_rewupa_zimubakubafo.pdfIn PDF document text
- https://xapowukugo.weebly.com/uploads/1/3/4/7/134702937/dajelu.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/zobuwubedak/25256194480.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/829c187f-6f62-4054-a92f-dcec733c7298/chronicle_of_754.pdfIn PDF document text
- https://s3.amazonaws.com/setikizo/airbender_2_movie_in_tamil.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6454cce9-5d50-4834-8815-d9b6c87bedd4/96683258297.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_off0000d1ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1CA	5292 bytes
SHA-256: `e543ccf1923a06fc49a2c7cafd567d265451bbbe67ec718e6d64855d0474b305`
`font_01_sfnt_off0000e3d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3D1	10396 bytes
SHA-256: `c2507db2828d9e2bf95e05a86bf5a08ca3bd822d3d972e06aefc87f03a53ed7f`

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