PDF malware analysis — malicious · b6d30e8b7af92294

MALICIOUS

PDF

71.2 KB Created: 2021-01-06 02:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 19ef93b7d953cd663889e7dd06a901c1 SHA-1: 53b6c5380668cacccfa6f885c3b9f1ee57fd43d7 SHA-256: b6d30e8b7af92294c61d06d535fce4a0232f1cbb39ba266abd2e9377db19778b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://trafftec.ru/aws?utm_term=canzone+di+bacco+pdf', which is likely a phishing or malware distribution site. Although the document body is heavily obfuscated, the presence of the external URI strongly suggests a phishing attempt or a lure for further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=canzone+di+bacco+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4368740/normal_5f8dd52d977bb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365553/normal_5fa40084ac0f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447626/normal_5fbf39391aaa3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452839/normal_5fc066deb2ae4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377663/normal_5f93c176a0f34.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380883/normal_5fa17f9275a7d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460045/normal_5fa4c60b250b5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4499942/normal_5fc44fa414471.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/2c740ddb-430b-4697-9513-b22db4d1b9e7/53593523554.pdfIn PDF document text
- https://s3.amazonaws.com/datarofapakil/femirimiribe.pdfIn PDF document text
- https://s3.amazonaws.com/dewazewokib/cdsco_guidelines_for_clinical_trials.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_off0000da3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA3B	4940 bytes
SHA-256: `2dfad3bd913149c0dbebdcf2ba9c0cd21cfa8d8fffc3fd04e4337aaedc55a70a`
`font_01_sfnt_off0000eb20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB20	11364 bytes
SHA-256: `729a36a3ca170f4a3d5623dd9b08b48ec36a49ec94cde1bb3ad809b0e66068ca`

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