PDF malware analysis — malicious · 2bd955a3ad68ae70

MALICIOUS

PDF

81.2 KB Created: 2021-01-06 23:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 6b1dd7c9a6d4b6f15c159b6aa98cf4d5 SHA-1: 906a90f37f4d029c3c5cb70a3bfbdf47e6d2cb23 SHA-256: 2bd955a3ad68ae7010fde42dfa9fdb44486ee9636409c43639559aaf02f54623

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/123?utm_term=cronus+and+rhea In PDF document text
- https://fisokupavunimi.weebly.com/uploads/1/3/4/4/134469682/zuwajuj-zogogupodapad-xomigof.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367645/normal_5f92ded68e7b8.pdfIn PDF document text
- https://lewixukulir.weebly.com/uploads/1/3/1/6/131606807/mitubefik.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485457/normal_5fc7abc65a067.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422877/normal_5f9dc0d3abf6d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480753/normal_5fb34105e1aa6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454681/normal_5ff2282f92800.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/3455ab3c-fe88-4691-8f56-5581f34f56f3/lajorifo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/85031bc1-e196-4104-ab39-58c537c5639f/i_heard_a_fly_buzz_when_i_died_critical_analysis.pdfIn PDF document text
- https://s3.amazonaws.com/piwupevivotixi/pmdg_airac_free.pdfIn PDF document text
- https://s3.amazonaws.com/xujitezu/cisa_study_guide_2018.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1fc18465-60fd-4c3b-8208-574258fe6a8f/how_to_hack_ixl_maths.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_off0001059e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1059E	4788 bytes
SHA-256: `bfaa4d778cf05b9be8573b2be2536c2aa7ea14e490cc1a3d9cde7c943f0b7fbb`
`font_01_sfnt_off000115d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115D3	10228 bytes
SHA-256: `963252ffad397901a2c475a3f37fed34d0058960f2715d291f0ba622676b747d`

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