PDF malware analysis — malicious · 4c3125c64ad479e6

MALICIOUS

PDF

65.2 KB Created: 2020-11-23 02:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: e90c0a3250de3364503e455445c3f660 SHA-1: 2d3dadd76a0925fc8ce142e04bed244ea04e0ad7 SHA-256: 4c3125c64ad479e60079660fed4223f5663912b51b1d13177b93d6915a59dc0a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the PDF structure and heuristics indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=poblacion+y+muestra+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4425211/normal_5faa67fd662cd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444630/normal_5fa5520409c6a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473340/normal_5fa5abb257f84.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366008/normal_5f889d33c2364.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365621/normal_5fb2787c79525.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/jezaxojipevu/abu_garcia_5600_bcx_diagram.pdfIn PDF document text
- https://s3.amazonaws.com/fajonubinomeder/how_to_read_assured_drug_test.pdfIn PDF document text
- https://s3.amazonaws.com/mufukep/55485463934.pdfIn PDF document text
- https://s3.amazonaws.com/tibitexil/77355155615.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d914cd7c-364a-4d0a-879f-33809019e0b1/fakexobirifozixu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/34414270-8aed-40b8-9f95-877411273a68/play_happy_cafe_menu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a28638d1-39a8-4398-98c7-e186360c883d/zuguvojib.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_off0000bfe4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBFE4	5544 bytes
SHA-256: `f61294fbbfee36243990b93c9cb6e757b4cefc83ab48d646e5f192eacd497de5`
`font_01_sfnt_off0000d2ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2AC	11136 bytes
SHA-256: `a26ecbfc391ff80c17114d554702fc9c20858f5f86cd84bc7bc74d5dd3081486`

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