PDF malware analysis — malicious · 034bb9278ef812c7

MALICIOUS

PDF

78.1 KB Created: 2021-03-14 21:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07

MD5: bfe4984717558eb3609e0bc263f5f877 SHA-1: 1f8a9c4f01dacfded60840b67250dc15a8118ad7 SHA-256: 034bb9278ef812c7a615af08c4b9a92528f158aeea5f70e55816f5869c7f9af8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with at least one pointing to a suspicious domain (jottigo.ru) that is likely used for phishing or malware distribution. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests a link farm on disposable hosting, further supporting a malicious purpose.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/123?utm_term=beneficios+de+los+alimentos+transgenicos+pdf PDF link annotation
- http://kyhni.site/bollywood_full_movie_wargr0ca.pdfIn PDF document text
- http://fofolep.mywebcommunity.org/dufebudikabinib.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419820/normal_602eebcad5228.pdfIn PDF document text
- https://cdn.sqhk.co/monubinejon/8ijpgIi/barbie_fashion_closet.pdfIn PDF document text
- https://cdn.sqhk.co/votojuxosaf/diaghW4/sharpening_auger_blades_with_dremel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470409/normal_602f917a0068e.pdfIn PDF document text
- https://cdn.sqhk.co/kitujesijak/3JkgiN1/62141943469.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415300/normal_5fffda90088cf.pdfIn PDF document text
- http://fibaxoxadomi.sportsontheweb.net/sirin.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4394061/normal_6013a3d82dd54.pdfIn PDF document text
- https://cdn.sqhk.co/tarudifirew/2fhbayW/virus_protection_free_download.pdfIn PDF document text
- http://faripofijukevom.mywebcommunity.org/latin_legal_term_for_precedent.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387420/normal_6038e34c36473.pdfIn PDF document text
- http://leaninrzpd.site/47920724302zzrby.pdfIn PDF document text
- http://egrn-order.online/elac_debut_series6seuz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444353/normal_5fd7af681dc59.pdfIn PDF document text
- https://cdn.sqhk.co/vopovaroxamo/fhd7Ihe/83792606701.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383687/normal_602fd27487fc5.pdfIn PDF document text
- http://nukapag.getenjoyment.net/80460736029.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_d3fa5e8a434241d39fd53b40d597c5b0.pdf?index=trueIn PDF document text
- https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_36f067e9ee5f4c8ea380689f37433339.pdf?index=trueIn PDF document text
- https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_8f644901e5e64ebb9ef2587632268bf1.pdf?index=trueIn PDF document text
- https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_ed2c46dbf23c4389bc68051fd156d3da.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_off0000e2a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2A9	5312 bytes
SHA-256: `8601abd3a6d17124002ad0ca7c2e5b1e10b23cc288c6b494dbe1c5fa700f401b`
`font_01_sfnt_off0000f49b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF49B	11704 bytes
SHA-256: `939ed7f154c6c6120bf9523cb4eb6d86d5a773c917f6b363d0fa3653ad2edbdc`
`font_02_sfnt_off00011a7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A7E	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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