PDF malware analysis — malicious · a95453c977fa6bb8

MALICIOUS

PDF

35.5 KB Created: 2020-11-09 08:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 6cc36db2ab82156ddd18f21f5107469d SHA-1: 4d1ccecb2f15178f203f2d5c3f8aee27f39c1ac4 SHA-256: a95453c977fa6bb8cb9391aed5b52d17eb292c4fc4a41e006bb5e7cb98b3e2dc

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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/123?keyword=my+favorite+chaperone+plot+diagram PDF link annotation
- https://cdn-cms.f-static.net/uploads/4378641/normal_5f935c50001a5.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/pafiganovavi/rachmaninoff_piano_concerto_2_sheet_music.pdfIn PDF document text
- https://s3.amazonaws.com/garorowa/cabot_historical_society.pdfIn PDF document text
- https://s3.amazonaws.com/fotojipifuzitul/66_80cc_high_performance_carburetor.pdfIn PDF document text
- https://jewukugokufe.files.wordpress.com/2020/11/vizexununuw.pdfIn PDF document text
- https://bokivonuko.files.wordpress.com/2020/11/29917440582.pdfIn PDF document text
- https://s3.amazonaws.com/bepukuba/indefinite_pronouns_subject_verb_agreement_worksheet.pdfIn PDF document text
- https://rezabaxew.files.wordpress.com/2020/11/rotomikegepuwejerarujo.pdfIn PDF document text
- https://gobifajoji.files.wordpress.com/2020/11/20873233488.pdfIn PDF document text
- https://s3.amazonaws.com/gumagabu/fair_auto_insurance_company.pdfIn PDF document text
- https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
- https://s3.amazonaws.com/napoledunadigo/dadidane.pdfIn PDF document text
- https://kixatipu.files.wordpress.com/2020/11/nematexuravokafubonav.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_off00004bad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BAD	5560 bytes
SHA-256: `778786e2f3ebeba6df87829d41a2bb29d7687efd69fb318918577605e1e8dd5f`
`font_01_sfnt_off00005e90.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E90	10268 bytes
SHA-256: `8721fd3bc3368eb05317dd7c7f9491d2eee5d8262551607947bf7457d39c5b90`

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