Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee0ddbbf9b259614…

MALICIOUS

PDF

84.7 KB Created: 2021-03-12 14:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: aeb78ebc9f76a964049a0b5cbc1a25db SHA-1: b68dba37ed5de3c18c28cadad1b897e19067f38b SHA-256: ee0ddbbf9b25961458c159a4f805ddecce1cad43a3488811e46f91ef98675783
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to 'star girl apk hack 4.1.3' and embeds a URL pointing to a suspicious domain, vilenefex.ru. This domain is likely used to host a malicious payload or redirect to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/wix?keyword=star+girl+apk+hack+4.1.3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404103/normal_601b458e7ac82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500187/normal_6005937a5c928.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373304/normal_5fe021fbc2540.pdfIn PDF document text
    • http://zaranes.getenjoyment.net/93360338197.pdfIn PDF document text
    • https://cdn.sqhk.co/riroxale/cjghaHU/lucky_block_servers_no_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/vgiUV3X/homes_for_sale_washington_island_wisconsin.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/iYijjfy/spears_games_3d_snakes_and_ladders_rules.pdfIn PDF document text
    • http://jibakerutev.mypressonline.com/toxemutofuralejebofaluvi.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/tidibu.pdfIn PDF document text
    • http://dowelatevitik.22web.org/tamil_attagasam_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/dDS4sjj/car_simulator_bmw_m5_apk.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/gogoxowiniza/welapepivudopaxagofiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424418c1-f38a-4ccc-b1a1-7e74599f8358/how_to_improve_reading_comprehension_skills_for_middle_school_students.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/74789477763.pdfIn PDF document text
    • http://sarososibi.rf.gd/kendo_dropdownlist_group_template_mvc.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/platform_ankle_boots_outfit.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/51295268314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e12b3169-a9ac-4fa1-bae5-933b568af527/94373804528.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/94359793447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f2d467-5b17-4fa0-9824-2bb6fdaebbba/52872277809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4af4e0a2-e33e-49bf-a23a-8b7fb70f0873/how_does_a_modulating_gas_furnace_work.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C1 5520 bytes
SHA-256: fd74fa12ce8150abebda284f4e09cd4c152f65009b71205570eaf65aac3da306
font_01_sfnt_off0000f791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF791 6256 bytes
SHA-256: 94190d038c887eae0e8e79da5559655f2fd543a7025f2d3881b12deb636fddd9
font_02_sfnt_off00010c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8A 10412 bytes
SHA-256: 4edbb0b58f3b14115ac7f48f969b3865295b204c5b49293110e6a409fc57c08d
font_03_sfnt_off00013073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13073 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb