PDF malware analysis — malicious · a239913b7076ea63

MALICIOUS

PDF

77.8 KB Created: 2021-03-12 07:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: bf08f020f0cce4c84c2f7467a7ec4d94 SHA-1: ec8291f5d51cf56f118e1e04799ead18b0aeab39 SHA-256: a239913b7076ea6362a3374a7fc28fbd625243005a05a192dc9000a8b203073f

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for 'Roblox card codes free' and embeds multiple external URIs, with one pointing to a suspicious domain 'resalured.ru'. Heuristics indicate it's a link farm on disposable hosting and a recovery secret lure, suggesting a phishing or scam attempt. ClamAV detection and ML classification confirm its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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://resalured.ru/wix?keyword=roblox+card+codes+free PDF link annotation
- http://fudoviwil.mywebcommunity.org/85744557502.pdfIn PDF document text
- http://setopin.mypressonline.com/que_es_un_lder_definicion_para_nios.pdfIn PDF document text
- http://kozizukexepuf.22web.org/magalomarevog.pdfIn PDF document text
- http://zoradiwa.iblogger.org/sejibizafowot.pdfIn PDF document text
- http://fulokixowo.scienceontheweb.net/vutiwifasikijavoxanodor.pdfIn PDF document text
- http://ruwufuwetoj.mygamesonline.org/linuzurijujatiradido.pdfIn PDF document text
- http://jukojadijomefar.medianewsonline.com/secant_angles_worksheet_answers.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zogoxuf.atwebpages.com/walmart_tv_trays_set_of_4.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a98873e7-1f6a-4de6-b80b-145fb0e9f421/uniden_dect_6.0_silent_mode.pdfIn PDF document text
- https://s3.amazonaws.com/fenatagazise/jelorerilara.pdfIn PDF document text
- https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_b2b1a9fabb9641b2ba0990bcb9912fb8.pdf?index=trueIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_b5eda0b207ce458d8f324c46510a6f38.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/7a9874a8-bfce-406f-9356-c44d265f295e/18314872475.pdfIn PDF document text
- https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_e7cafa4b452a4691b55e1d93acead034.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/cf551b10-1823-4c4a-8473-0b9221a519b0/zesux.pdfIn PDF document text
- https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_d429af664338416b970c72e98aa729db.pdf?index=trueIn PDF document text
- http://xafuvarajuxeg.epizy.com/ejercicios_de_pronombres_relativos_en_ingles_con_solucion.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/37ad9f70-28fa-4820-806f-30db0c751f02/43543636360.pdfIn PDF document text
- https://s3.amazonaws.com/tetenifeme/34302386461.pdfIn PDF document text
- https://s3.amazonaws.com/fovezewi/50756322966.pdfIn PDF document text
- https://s3.amazonaws.com/nowokil/40149830114.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_off0000e82a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE82A	5228 bytes
SHA-256: `71add25e81ef8030155405982c1cdd0bc18c1ce9c827c79f119c6d76989371fb`
`font_01_sfnt_off0000fa03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA03	2092 bytes
SHA-256: `9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2`
`font_02_sfnt_off000103a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103A4	11140 bytes
SHA-256: `f5e1c815b0c09d1fc43c560b19488095d5988d6fd92fc3c73320be6a994fd890`

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