PDF malware analysis — malicious · 6ac336b4e4b9cfb4

MALICIOUS

PDF

118.7 KB Created: 2021-03-13 23:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 7b1c20151e0942f8dca9552c68cea242 SHA-1: 416f257074c18d71a4a97408429ecc884e2ecc15 SHA-256: 6ac336b4e4b9cfb46d99b82cb61edde67e4993da8034664b685a3ef3ac733bce

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9979

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://resalured.ru/strik?utm_term=a+dance+with+dragons+audiobook+chapter+times PDF link annotation
- http://reduslimer.website/android_google_manager_6._03zgve.pdfIn PDF document text
- http://kemytbok.xyz/7948576969fnxqt.pdfIn PDF document text
- http://mokaxizekebade.scienceontheweb.net/37934173878.pdfIn PDF document text
- https://vutitikanok.weebly.com/uploads/1/3/4/7/134774074/7106685.pdfIn PDF document text
- http://salonop.xyz/high_school_biology_syllabus_template8fvuf.pdfIn PDF document text
- https://xefigokilevugez.weebly.com/uploads/1/3/5/2/135299251/ruruvajodax_gepilij_gorobofirariti_vilizodoloxigez.pdfIn PDF document text
- http://ekzo-fruit.ru/lowes_dreamline_bypass_shower_doorsj5n6d.pdfIn PDF document text
- https://rofujerejikuf.weebly.com/uploads/1/3/5/3/135388349/joduvakod_furanadu.pdfIn PDF document text
- https://fanakigefepawaf.weebly.com/uploads/1/3/0/8/130873796/nemarafisefo.pdfIn PDF document text
- https://wufopuse.weebly.com/uploads/1/3/5/3/135300065/zagijodikifuzopow.pdfIn PDF document text
- http://nyvelsets.online/28019375069s1vwt.pdfIn PDF document text
- http://gobitujesan.scienceontheweb.net/21379030344.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_71dbf1997a874f28ac2984dbc16b292c.pdf?index=trueIn PDF document text
- https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_b241049d226c49afac177e42490c007d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pezofut/xopazazof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/27e9e39b-9bf0-4923-922c-91117d7fa7eb/how_much_money_do_movie_directors_make_per_movie.pdfIn PDF document text
- https://s3.amazonaws.com/xamibudasagas/90962125140.pdfIn PDF document text
- https://s3.amazonaws.com/lorifawuvawot/consultation_report_form.pdfIn PDF document text
- https://d05b2b94-0af3-401c-a6ef-75d00d0b58ae.filesusr.com/ugd/3bca44_8b6afd10c04440deaec3a15438b5cbc6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/ba8b4721-f5f2-4fd5-aa3f-6f0bf9b68a27/viporesuminabixazet.pdfIn PDF document text
- https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_d8b2b78f500a442e8126b2f184c03dc8.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gupawupigawono/activity_1._10_colliding_worlds_answers.pdfIn PDF document text
- https://s3.amazonaws.com/jozaponi/brand_voice_guidelines_examples.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_off00016550.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16550	5276 bytes
SHA-256: `06b45fbdf6fdff9db3ca1835ece4d6fae03719b10dbc94c51a45414eb29b8e1e`
`font_01_sfnt_off00017795.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17795	5740 bytes
SHA-256: `4230f01acb8126441225ca97e294fc34ccc8abd8f18aad950fcb2f0313019d0d`
`font_02_sfnt_off00018b01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18B01	22592 bytes
SHA-256: `276bb7a25297c50bff7bd7d3f638b9814b725f5cd74d7aa177629d9e6e0583c6`

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