PDF malware analysis — malicious · 0bb708c060e464d9

MALICIOUS

PDF

89.3 KB Created: 2021-04-27 12:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: d75187ef5479cb1bd8d699e82f1acde2 SHA-1: 741ca093d44850acc2d572dc85f051446cbada43 SHA-256: 0bb708c060e464d9699aa29c018e9f26d836fa0008e0dc501c97749916315f67

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was flagged by multiple heuristics, including ML and ClamAV, for being malicious and a phishing attempt. The 'SE_SECRET_RECOVERY_LURE' heuristic indicates the document likely prompts users for sensitive recovery information. The presence of numerous external URLs, many pointing to disposable domains, suggests a phishing campaign aimed at credential harvesting or malware distribution. No scripts were extracted from this sample, but the PDF structure and embedded URLs are indicative of a phishing attack.

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://maypoin.ru/strik?utm_term=trane+air+conditioner+outside+fan+not+working PDF link annotation
- https://cdn.sqhk.co/wavefekus/IhgIGgh/70279019496.pdfIn PDF document text
- http://dfds.in/what_are_the_basic_elements_of_christianity9svz5.pdfIn PDF document text
- http://tosety.xyz/84678677141uf7vi.pdfIn PDF document text
- http://stepka2016.xyz/ethnographic_research_definition7ekih.pdfIn PDF document text
- http://graatorama.fun/what_is_japans_absolute_locationaux1e.pdfIn PDF document text
- http://tehnotop.store/water_borne_parasitic_diseases4jjrf.pdfIn PDF document text
- https://luzenesezenobo.weebly.com/uploads/1/3/5/3/135307250/5697842.pdfIn PDF document text
- http://jalojewaga.mypressonline.com/ravufeturanokos.pdfIn PDF document text
- https://cdn.sqhk.co/nedivixozu/f41Nkhe/taxoweforaxomiwidono.pdfIn PDF document text
- http://xafesuvorolivig.scienceontheweb.net/tafumidewivaka.pdfIn PDF document text
- https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/309f91.pdfIn PDF document text
- https://bufodenoziro.weebly.com/uploads/1/3/4/5/134585066/kamizabagazuv-guwobur-vapikotidakaz-tisupono.pdfIn PDF document text
- http://onesmall.space/washington_gas_company_woodbridge_valjj0p.pdfIn PDF document text
- http://psychologyrelax.xyz/welusuvalte.pdfIn PDF document text
- https://cdn.sqhk.co/zadexona/iggijgX/48535618532.pdfIn PDF document text
- http://dress-russia.ru/is_your_facebook_account_recovery_code_emailpnw8v.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
- http://muvekalufisu.atwebpages.com/how_to_prime_wagner_paint_sprayer.pdfIn PDF document text
- http://domuromu.atwebpages.com/boule_de_suif_analyse.pdfIn PDF document text
- http://wutesejib.onlinewebshop.net/varicocele_grado_1_tratamiento.pdfIn PDF document text
- https://de2a8dfc-dc8d-4d62-be3b-f97abdd17bf6.filesusr.com/ugd/c722c2_9d7be73863bc4c038bb7a1ffc8324ea6.pdf?index=trueIn PDF document text
- https://9df6e0af-a028-4e88-91ba-61a1b37318d5.filesusr.com/ugd/7c1f05_dd3af0d9e04e479eaae7ca7a125fc51d.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_off000110ef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110EF	5144 bytes
SHA-256: `80dc4443fdfac11a9d8548ffe87a15f2c268316d9fb8fe6becd37d87184f27a2`
`font_01_sfnt_off0001228b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1228B	11364 bytes
SHA-256: `4b005a5a69d406241e08ebfdd28ad0d4160b63c080ab78b3b1a973a4a287c81e`
`font_02_sfnt_off00014967.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14967	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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