PDF malware analysis — malicious · 05339d240bcee9bf

MALICIOUS

PDF

75.7 KB Created: 2021-03-16 02:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: c264386564c6b024af68ef4e4c3ffe46 SHA-1: d8382ba99ec803b2157b5c69ae957b0ecb28f6fa SHA-256: 05339d240bcee9bfcf167343be2962aa3c5c68ac832f2d8e96f5342c37e52fb3

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URIs and is structured as a link farm, directing users to external sites like 'ponafet.ru' and 'bejisosubonito.sportsontheweb.net'. The document body, though heavily obfuscated, appears to contain keywords related to software installation, suggesting a lure for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://ponafet.ru/wix?keyword=nox+how+to+install+apk PDF link annotation
- http://bejisosubonito.sportsontheweb.net/pezelifezurorudikudakad.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449602/normal_5fda71b257f99.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373297/normal_5fd79c4cb7c26.pdfIn PDF document text
- http://zitalogeloluwiw.mygamesonline.org/allianz_se_annual_report_2020.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468268/normal_600e9fdb100b3.pdfIn PDF document text
- http://posadukik.getenjoyment.net/80625381557.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/wamatasamegu/bengali_phantom_comics.pdfIn PDF document text
- https://s3.amazonaws.com/sorogamat/chicken_invaders_5_full_unlocked_game.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f32b568-afc0-4fec-9811-72b5da426472/segupakufesivekilo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/173040a3-ff2b-4874-91e4-943098c97815/lowrance_elite_7_hdi_flush_mount_kit.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2930aae0-0770-4e09-bc45-d8b71e0e4296/how_to_set_my_wild_game_camera.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6526ab64-2fc6-42d9-b2eb-cd69074beff4/gem_of_the_ocean_symbolism.pdfIn PDF document text
- https://s3.amazonaws.com/befarekogol/80104675372.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b239fe8f-b8dd-4a17-9c33-395eac699fc3/common_core_math_word_problems_4th_grade.pdfIn PDF document text
- http://kogotiru.myartsonline.com/statistical_significance_test.pdfIn PDF document text
- https://s3.amazonaws.com/wixatax/6762128205.pdfIn PDF document text
- https://s3.amazonaws.com/gogonof/android_auto_not_compatible_with_huawei_phones.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d935aa90-13a3-472d-9977-86c2da00799a/muriwifiji.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0777b076-bc5e-47bf-b115-d7ae733a35f5/55404409948.pdfIn PDF document text
- http://matewedidoxeber.onlinewebshop.net/xoparuvubejur.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33a07c5c-021d-44e2-aefe-a6a26315509e/what_is_the_biblical_definition_of_faith.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e120.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE120	3044 bytes
SHA-256: `af028f77d0ef68f0f6b2d4af7ea6a5fb6f3a1a2683fee6bee5a5f2a5853dafb0`
`font_01_sfnt_off0000ec07.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC07	5004 bytes
SHA-256: `d422ef34900ab5f6ea1fff03cf5be17654267178ec8fc6e6f5fe4ac6d308c232`
`font_02_sfnt_off0000fd26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD26	10536 bytes
SHA-256: `4eba7de55547b2613c51834004d736344e57e26e93e060706bc0a45610416919`

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