PDF malware analysis — malicious · 2cdddea0210c439e

MALICIOUS

PDF

80.3 KB Created: 2021-03-20 10:11:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 082ebb44b95080b042f5bf19119c58c9 SHA-1: 9ad1580a95fef8679c0564a9e3f69d5f0800b5a6 SHA-256: 2cdddea0210c439ed1f062bb399837c43be0c1fbd870076a7a656bf9dd3aa3b5

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. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or SEO abuse. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://leonvi.ru/wix?keyword=art+of+conquest+apk+mod PDF link annotation
- https://cdn.sqhk.co/vumivatuvi/jaja3TQ/46627281503.pdfIn PDF document text
- http://meetly.space/390499133138k0vs.pdfIn PDF document text
- https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/e7e53408f2d.pdfIn PDF document text
- http://sizegoduxuxa.mygamesonline.org/bad_blood_book.pdfIn PDF document text
- https://sezowizubuv.weebly.com/uploads/1/3/0/8/130874308/pasawepe.pdfIn PDF document text
- http://bukenisefino.mygamesonline.org/jugelo.pdfIn PDF document text
- http://ninomut.sportsontheweb.net/dapoverusinesok.pdfIn PDF document text
- https://cdn.sqhk.co/vewukiziwemi/giagcCJ/sliced_bread_museum_chillicothe_mo.pdfIn PDF document text
- http://dibubewivutuva.22web.org/kuwolanemanawe.pdfIn PDF document text
- https://varepanuror.weebly.com/uploads/1/3/5/3/135394497/wapopafon.pdfIn PDF document text
- https://cdn.sqhk.co/feduvefas/hhficdi/36531699184.pdfIn PDF document text
- https://cdn.sqhk.co/zoxowowi/dSYjjif/kick_the_buddy_2_mod_apk_android.pdfIn PDF document text
- https://cdn.sqhk.co/dozawulu/dHIghjd/1340390240.pdfIn PDF document text
- https://cdn.sqhk.co/nedupugifuka/jkidMhg/46577017279.pdfIn PDF document text
- http://nubinugegeb.22web.org/mesikixewedagik.pdfIn PDF document text
- http://vurejowug.mypressonline.com/how_to_bypass_washer_lid_lock.pdfIn PDF document text
- http://kefudepoduwudi.sportsontheweb.net/abdc_journal_list_2020.pdfIn PDF document text
- https://vadururufuwowo.weebly.com/uploads/1/3/4/5/134581676/4594844.pdfIn PDF document text
- https://cdn.sqhk.co/vedanoderifu/d5gevNp/best_wallpaper_hd_frogs.pdfIn PDF document text
- http://chtotakoebezuz.biz/tubugudiwasalinarijxy4h.pdfIn PDF document text
- https://cdn.sqhk.co/kupibetefuko/cqcJuii/29871184085.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://vijiviwo.epizy.com/21978944857.pdfIn PDF document text
- http://zisoramemib.rf.gd/28868554259.pdfIn PDF document text
- http://jajowisomipuw.epizy.com/99663968749.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_off0000ef06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF06	2960 bytes
SHA-256: `00c0a141202c10936ceac8b8df9df75720096dbedde9c5fde8d9f3447cbb363c`
`font_01_sfnt_off0000f975.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF975	5448 bytes
SHA-256: `a8aec8fec8dc69d9145c4db5d4a3ce09d12cb23f4cb3895b9aa93a34c1196dc6`
`font_02_sfnt_off00010bee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BEE	11452 bytes
SHA-256: `632c11a9c57cd2f9243927b5ad7212ede1c2f313e0c4a3b82f0847f36b3eaf89`

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