PDF malware analysis — malicious · 7a0f9e1499c972cf

MALICIOUS

PDF

66.6 KB Created: 2020-12-15 22:34:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 5ee85ccd5066820ff0b2d253bdef1553 SHA-1: b825bb0215f6f3debb6187c8c7fc514014513ee2 SHA-256: 7a0f9e1499c972cfb9e2c1a18ca7a2777af55fb6f6fd132068c0d2a145140ea9

96 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. 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 0.9996

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://trafffe.ru/strik?utm_term=dunkin+donuts+wake+up+wrap+carb+count PDF link annotation
- https://cdn-cms.f-static.net/uploads/4403688/normal_5f9fd665326e7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368489/normal_5f8a08b7d95ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384647/normal_5f98479f9f8d3.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/bejikefowu/windows_10_malware_removal_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/94aed82f-4984-4e9a-811d-469fc4632c96/somalia_natural_resources_overview.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3bdf2e3f-a2f0-4803-9f7e-50ac8ff2acf4/momam.pdfIn PDF document text
- https://s3.amazonaws.com/dakebesuvum/eeg_periodic_lateralized_epileptiform_discharges.pdfIn PDF document text
- https://s3.amazonaws.com/vuliwisuwig/best_annotator_android_app.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4969586a-1aab-414f-9e80-2a5c75a477f1/hausratversicherung_huk24_test.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/729f937f-fd10-4914-91cc-585975601bba/14596517979.pdfIn PDF document text
- https://www.youtube.com/watch?v=kipF5In 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_off0000c691.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC691	5328 bytes
SHA-256: `953abced76e5ac9b343d7375a9452c443e23297f182531ca1efada31170addba`
`font_01_sfnt_off0000d8d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8D2	10740 bytes
SHA-256: `98d26619823508e99eb1b0687870c698cfd68dfc0524dc17fe0ca912e3a8ba8e`

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