PDF malware analysis — malicious · 4fe006248eb59053

MALICIOUS

PDF

72.6 KB Created: 2021-02-22 18:04:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: 3f8e81959d83bcefa2c136f8d50a3026 SHA-1: e076cf6ed84793aadecc30a656206c027a946bfc SHA-256: 4fe006248eb59053f393429814296c9939e311190fed1fd4a84ade8069acef8f

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified as a link farm, with many pointing to disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://druttle.ru/aws?utm_term=modos+de+produccion+comunidad+primitiva+economia PDF link annotation
- http://bandalet.club/49215792992eirou.pdfIn PDF document text
- https://cdn.sqhk.co/popaxutu/jgpJAgg/super_placar_todos_os_jogos_de_hoje.pdfIn PDF document text
- https://cdn.sqhk.co/nopawuwam/jejbXhe/draw_your_game_download_pc.pdfIn PDF document text
- https://cdn.sqhk.co/rapowipijes/hhdihhg/rovozorifikejofiwov.pdfIn PDF document text
- http://muzhskoizhurnal.ru/boss_telugu_songs_320kbpssdbvv.pdfIn PDF document text
- https://noxajigaja.weebly.com/uploads/1/3/4/6/134698193/6028078.pdfIn PDF document text
- https://cdn.sqhk.co/xumifutave/giifbig/chocolate_pudding_ideas_for_christmas.pdfIn PDF document text
- https://sinipipa.weebly.com/uploads/1/3/0/8/130874509/bifesul-pukavulo.pdfIn PDF document text
- https://cdn.sqhk.co/wiluxuko/e22bjdS/90661824356.pdfIn PDF document text
- https://cdn.sqhk.co/rapurakoke/jfib1Mk/13838453877.pdfIn PDF document text
- https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/2809ac32a37.pdfIn PDF document text
- https://cdn.sqhk.co/govuzupikiwe/0KMgd1d/natural_remedies_for_inclusion_body_myositis.pdfIn PDF document text
- https://jematujevuzonip.weebly.com/uploads/1/3/4/2/134235480/fc67ca8c6.pdfIn PDF document text
- https://cdn.sqhk.co/gasalikuviz/Yjiiijf/free_stuff_near_me_craigslist.pdfIn PDF document text
- http://dietnatur.fun/game_designing_software_for_beginners_free5ob7k.pdfIn PDF document text
- https://jikudirag.weebly.com/uploads/1/3/4/0/134040407/fezenozufipetilul.pdfIn PDF document text
- https://sazulolako.weebly.com/uploads/1/3/1/4/131453808/xigogene.pdfIn PDF document text
- http://teachersaid.fun/xolujofezapugisx4vp5.pdfIn PDF document text
- https://cdn.sqhk.co/foluxaziwaj/ggglDbM/rajikedoselelavujo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/lejivugeleguwod/nanemumanax.pdfIn PDF document text
- https://s3.amazonaws.com/zulezov/28273181424.pdfIn PDF document text
- https://s3.amazonaws.com/posaxugidut/poster_presentation_guidelines_conference.pdfIn PDF document text
- https://s3.amazonaws.com/duzexefemosaxe/nuxini.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000de3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE3B	5252 bytes
SHA-256: `c7c27734c3dee583b1674158586edbdd65cea17e4a3f9576df1bda536caee356`
`font_01_sfnt_off0000f011.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF011	10788 bytes
SHA-256: `3dcd1d8cff1b7f695aa6c2c61c8f669e9b6a858794531ff43ed7050244f1b1b3`

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