PDF malware analysis — malicious · 8aa6590c7fe68061

MALICIOUS

PDF

77.6 KB Created: 2021-04-06 13:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: 3cb2886a2d777e652f8e13c918dab630 SHA-1: b1ebcb791c7b0026e8d6ff800c07e2d58a0f7674 SHA-256: 8aa6590c7fe6806174b6d041c10a396c58a94302b8e03008b370661ef65c327a

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary one pointing to 'xajibur.ru' disguised as a game mod download. This URL, along with many others, suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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://xajibur.ru/wix?keyword=stormborne+infinity+arena+mod+apk PDF link annotation
- http://raisinshub.pro/outlander_timeline_books_vs_show62v9q.pdfIn PDF document text
- http://musc-media.xyz/sezumuvaputik3zxce.pdfIn PDF document text
- http://fastdonwload.space/10_best_basketball_drills_for_beginners92lic.pdfIn PDF document text
- http://tomandbxof.site/83751861378e5lyd.pdfIn PDF document text
- https://cdn.sqhk.co/vobipibomuk/gfMiihC/scummvm_games_collection_download.pdfIn PDF document text
- https://cdn.sqhk.co/nazutupim/cHVThcH/xerewilim.pdfIn PDF document text
- http://bestcreditcheck.info/age_of_sigmar_rules5yi32.pdfIn PDF document text
- http://winnerslm.space/bcom_1st_year_books_business_communicationp3f95.pdfIn PDF document text
- http://pezisafepogux.22web.org/wing_chun_dummy_techniques_download.pdfIn PDF document text
- https://cdn.sqhk.co/zitibidino/ijeQIid/tableau_electrique_maison_individuelle.pdfIn PDF document text
- http://replyua.site/systemverilog_assertions_handbook_4th_edition3dwd7.pdfIn PDF document text
- http://feldhaus-klinker-plitka.ru/baby_cot_sheets_adairs203lv.pdfIn PDF document text
- http://konsalting.info/informacion_sobre_la_caverna_de_las_brujaseredj.pdfIn PDF document text
- http://mugedly.xyz/score_sheet_template_for_bowlingdz5wp.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/jaloto/gepokekubarasatapitiz.pdfIn PDF document text
- https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_e0d0014074c44df4927c8cbb2edcb64f.pdf?index=trueIn PDF document text
- http://vadufitewaseru.epizy.com/tajuvenopenirapu.pdfIn PDF document text
- http://vowefaxi.epizy.com/male_social_workers.pdfIn PDF document text
- https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_557ccbe2590d4fb6a7743c6a2c28bf19.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/waduzirader/vafemozim.pdfIn PDF document text
- http://jijuvusibob.rf.gd/il_cantico_delle_creature_branduardi.pdfIn PDF document text
- https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_9ce93cda98a24e2c9f01325d4c22e365.pdf?index=trueIn PDF document text
- https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_b85e0f2e486e4980a99b88a8db8a1703.pdf?index=trueIn PDF document text
- http://bixasejefo.rf.gd/52189680596.pdfIn PDF document text
- https://b133b025-67d1-4190-9e53-fbb99503dec2.filesusr.com/ugd/caf13f_a5ad0ef5ff2346dca178fe252e98f727.pdf?index=trueIn 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_off0000e544.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE544	5384 bytes
SHA-256: `9c8b39a5fdea78bfd2cd442a680e8d7e3c77d70edd65dae5c2ee2b95152a2908`
`font_01_sfnt_off0000f77e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF77E	1892 bytes
SHA-256: `1fc12a375bcc3be3bb541ba0d2e75a9deb76d5cd30a42549199b3ff9798c8b1e`
`font_02_sfnt_off0001009e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1009E	11648 bytes
SHA-256: `f39da9d12c84981af6ea436b0e82442a00f56eeb1add942d0b20ba91a153a43e`

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