PDF malware analysis — malicious · 5558f7ab69f1df3a

MALICIOUS

PDF

78.9 KB Created: 2021-03-15 21:55:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: ed8fdfb36006baf06e527069af59c54d SHA-1: 69800800b8e4f50e730638c6236c87568ab5b453 SHA-256: 5558f7ab69f1df3ac8e847d230c6f3b0d43b559d9a88b89a7b4dcc6e09cd500e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous embedded URIs, with a primary suspicious URL pointing to zajinet.ru. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, suggesting a phishing or spamming operation. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/strik?utm_term=old+chandamama+stories+in+telugu PDF link annotation
- http://knitfqph.site/rca_usb_charging_clock_radio_with_dual_wake_manualsmkm5.pdfIn PDF document text
- http://bcipreactivaperu.com/5635152589292i7g.pdfIn PDF document text
- http://nubolats.xyz/you_cant_take_it_with_you_playwright6eqwr.pdfIn PDF document text
- http://sarhello.online/51197994363pa23i.pdfIn PDF document text
- https://cdn.sqhk.co/pifizumux/iiOjeJe/67388415488.pdfIn PDF document text
- https://cdn.sqhk.co/molivovuki/Qhaibji/nail_salon_in_the_mall_lubbock_tx.pdfIn PDF document text
- http://liketime.online/ar_15_operation_gifpoxz3.pdfIn PDF document text
- http://gizejiparo.iblogger.org/rock_guitar_arpeggios.pdfIn PDF document text
- http://vquest.website/the_religion_of_islam_maulana_muhammad_alitfyaz.pdfIn PDF document text
- http://pubguckazan.com/33741521378563xy.pdfIn PDF document text
- http://shoop-fo.ru/1994_softail_service_manualkedig.pdfIn PDF document text
- http://vuxuxabuj.iblogger.org/61299351837.pdfIn PDF document text
- https://cdn.sqhk.co/labifikup/hbjQjC7/ribbed_skater_dress_forever_21.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://s3.amazonaws.com/mujesogi/aluminium_panel_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/divikufifir/tufuxepowetebameroragumuw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f516c11d-68a8-4e92-bd22-5e6d4cfe523b/43502330098.pdfIn PDF document text
- http://lodavudomajip.epizy.com/66091723592.pdfIn PDF document text
- https://s3.amazonaws.com/buxoparadazegu/tolagakefofawafapazi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ae1bace-5fb3-4f75-853f-8b7a8790f5f0/jinojutupirin.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae9eb560-cd69-4f8a-93ee-4d5d7522c6a3/1072831953.pdfIn PDF document text
- http://nirutavikuda.epizy.com/telecharger_ps4_emulator_android_apk.pdfIn PDF document text
- http://kefixofelapadi.epizy.com/57300753739.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ccaa55cd-7988-446d-875a-67ac7844c560/petibifizuliliwera.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_off0000e654.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE654	5380 bytes
SHA-256: `fa91d16952bceaf7413accf915a4a605763131715974ac622f03ac059ec9b7ee`
`font_01_sfnt_off0000f867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF867	4200 bytes
SHA-256: `846fac1130ee770ba75eedc500dc864a4827fde178313a2a889d61c068f60f0c`
`font_02_sfnt_off000107d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107D9	10612 bytes
SHA-256: `a75b645abfe2d4bbe4d9141cc71ffcc3557f7eebb2a1b3a33f3ef5420bdf2e99`

Open this report in the interactive analyzer, or submit your own file for analysis.