PDF malware analysis — malicious · 52182d394a3645f3

MALICIOUS

PDF

90.0 KB Created: 2021-03-17 04:32:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 1347c4c3f09ee07adbf4ca8bbc536635 SHA-1: 6540c5e96611bb210886cce69bc9cfcb180991f5 SHA-256: 52182d394a3645f31fb8da37d5fe78c6551053a199ad4bb34b1dc439ed8a550a

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, with one prominent URL pointing to 'seumenha.ru' and disguised as information about Minecraft mods. This URL is flagged as unknown reputation, suggesting a potential phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan 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://seumenha.ru/wix?keyword=minecraft+elevator+mod+1.16 PDF link annotation
- http://myfavoritesun.xyz/marsha_linehan_radical_acceptance_bookq6wrb.pdfIn PDF document text
- https://fazerirusabutef.weebly.com/uploads/1/3/1/3/131381144/jemedomut.pdfIn PDF document text
- https://siroxaje.weebly.com/uploads/1/3/4/0/134000026/waxotud_xojipozopasero_fojerum_nekadagalapiwa.pdfIn PDF document text
- http://verifiedbadge-lnstagram.com/1_oz_australien_lunar_iii_maus_silbermnze_2020i96t4.pdfIn PDF document text
- https://fokurojisek.weebly.com/uploads/1/3/1/4/131438639/6893132.pdfIn PDF document text
- https://towelekuw.weebly.com/uploads/1/3/1/4/131406253/9340943.pdfIn PDF document text
- http://dom-bita.org/where_can_i_do_a_first_aid_course_near_meu3ht5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454040/normal_5fd642958265f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479705/normal_5fda58a074fdf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417805/normal_600fe9186280a.pdfIn PDF document text
- http://hyipinvest.site/270155369296m7at.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://b6e49935-6d58-4bde-831f-6e0b746776d3.filesusr.com/ugd/7d321f_bbf1fe6a9a324f28a99e13dd1eef51d1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zurovajij/who_makes_magic_chef_freezers.pdfIn PDF document text
- https://s3.amazonaws.com/mokamoba/wallpaper_anime_naruto_hd_android.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f7a59b0a-0c48-4ea6-a0ac-e2b58f149875/muwulivuwazogegogaduvola.pdfIn PDF document text
- https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_9d67c66bbad24ef184610dc46e87219b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xoxaneral/what_is_the_definition_of_mental_toughness.pdfIn PDF document text
- https://s3.amazonaws.com/falevi/43964677508.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4d4cf7e-f64e-4b4f-a281-d4bcf7eb6ee9/melhores_cursos_de_ingles_avanado_online_gratis.pdfIn PDF document text
- https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_a8ffb10ca591462aa4fc88eb82a94911.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/moduxanakuri/91202700603.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001026b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1026B	5292 bytes
SHA-256: `f716ebff87d32f0be36aaf4514df9bc6d0dc3dcd324ffd3067c3a511cbd7e3f6`
`font_01_sfnt_off00011473.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11473	15060 bytes
SHA-256: `7cc93a88324099f148bfadd84f166b435b1d2e44ac694e2cf9016d18b478f4af`
`font_02_sfnt_off0001443c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1443C	16064 bytes
SHA-256: `8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802`

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