PDF malware analysis — malicious · 88ec6be4c6a03b58

MALICIOUS

PDF

41.2 KB Created: 2020-11-08 10:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 388d3c0342a0de97b45de6e6725907a4 SHA-1: a58c0d1c5e83a0cad4a7e933dd2328feaa3b85cc SHA-256: 88ec6be4c6a03b5869be36f19f7c398d287bf728f5dd7f81154af692185b52b4

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=comparison+bar+graphs PDF link annotation
- https://cdn-cms.f-static.net/uploads/4367952/normal_5f91b34ebac9e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366401/normal_5f88033a03ae4.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/wegugus/bonuge.pdfIn PDF document text
- https://sefopajupe.files.wordpress.com/2020/11/dosukokobetegizar.pdfIn PDF document text
- https://vogubok.files.wordpress.com/2020/11/skrill_app_download_apk.pdfIn PDF document text
- https://s3.amazonaws.com/zoromexemuzid/4867939499.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83b56725-eccf-46eb-8545-26164681dc96/49531175423.pdfIn PDF document text
- https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
- https://s3.amazonaws.com/guxosa/lujatitanu.pdfIn PDF document text
- https://bugozipopubu.files.wordpress.com/2020/11/76722670462.pdfIn PDF document text
- https://lamopute.files.wordpress.com/2020/11/watch_trapped_season_2_online_free.pdfIn PDF document text
- https://s3.amazonaws.com/kibavutibeved/costco_food_court_nutrition_information.pdfIn PDF document text
- https://fizafadolozu.files.wordpress.com/2020/11/31713389540.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_off0000639b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x639B	5244 bytes
SHA-256: `81a488eadac42d25f227dad58c5bac8b3ad4b428e5f3851284cd2f56659092f6`
`font_01_sfnt_off0000753c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x753C	10180 bytes
SHA-256: `14352a6aae46d38ef881deb428a4991e5c051cc2fbc3ca23c93e2a3de39fb73a`

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