PDF malware analysis — malicious · 9874568951c040e8

MALICIOUS

PDF

45.6 KB Created: 2020-11-03 13:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 6a27f466953026eeefbfd67626a472c6 SHA-1: 1306711138e30cdd68dfaafce257d9de7038e1c3 SHA-256: 9874568951c040e81c677e420bbff7a626527ef10123a407e65d91065a4ce1a5

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that points to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL likely serves as a lure to download a second-stage payload or redirect to a phishing site. No scripts were extracted, but the PDF structure and URL are strong indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://ggtraff.ru/strik?keyword=archenemies+by+marissa+meyer+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4380068/normal_5f97389c304d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368226/normal_5f8a9e6fbccd5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387571/normal_5f9bcd411e17c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366319/normal_5f872ad456d0c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413838/normal_5f94a941dcc38.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369663/normal_5f9e583c97542.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/65515de4-ecaf-4367-9ccc-c88ef7332d19/54581092761.pdfIn PDF document text
- https://s3.amazonaws.com/saxefi/bell_kit_notes_chart.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aba60f29-70da-420a-970f-a7226ba35e21/peplum_top_pattern.pdfIn PDF document text
- https://s3.amazonaws.com/vexosafugunu/97440235856.pdfIn PDF document text
- https://s3.amazonaws.com/nijudow/plant_hybridization_techniques.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_off000071a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71A0	5592 bytes
SHA-256: `a8b24a63dd00590c1e146c09622be4460c441414d9d1b5b201c3bd597710d931`
`font_01_sfnt_off00008480.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8480	11324 bytes
SHA-256: `028e80b2ac6b5c5d5152572088eee445ace502d8ce97e190da44fe188f69bf32`

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