PDF malware analysis — malicious · 22654fb1ced87b13

MALICIOUS

PDF

80.4 KB Created: 2021-02-06 09:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 361b5b61957917fe6cb7dd2f9f06bf2a SHA-1: b533deefc5e5079bc49c31e1672bb30594e64fcd SHA-256: 22654fb1ced87b13dddcb446b8f86b97c4d7d78f8efaac6938a01fcf2cf6468f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and Weebly-hosted files, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to exploit users.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/aws?utm_term=ms+sql+server+2017+32+bit PDF link annotation
- https://geregilewupune.weebly.com/uploads/1/3/4/8/134849809/tobadon.pdfIn PDF document text
- http://fullpisetc.ru/meguxewasugovabeb3i905.pdfIn PDF document text
- https://zevebijupaxize.weebly.com/uploads/1/3/4/7/134754497/89c1f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473445/normal_60066450e3f2b.pdfIn PDF document text
- https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/watibojet-kupolotogazap-gugivetelu-rukeko.pdfIn PDF document text
- https://cdn.sqhk.co/vavegewumur/uhiihgi/dubonenopebe.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4467926/normal_5ffe71fef27d2.pdfIn PDF document text
- https://cdn.sqhk.co/linidivez/jfjiwjc/84494044826.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386836/normal_5fdce043497aa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425230/normal_60126a60b9575.pdfIn PDF document text
- https://cdn.sqhk.co/mujawiru/bmuUjdy/zofuvawuwokofi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4444371/normal_5fc5a059897d3.pdfIn PDF document text
- http://voztrans.ru/biblia_ortodoxaoty2v.pdfIn PDF document text
- http://igafnd.org/kefirevixopevetawi2m8mt.pdfIn PDF document text
- https://cdn.sqhk.co/vekuperik/Kr4igrP/66842451689.pdfIn PDF document text
- http://com-servers.online/rocketbook_panda_planner_pagesr4e06.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367923/normal_5fe87801a4953.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450889/normal_5fd1248cb71a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499309/normal_5fd1e1f97722b.pdfIn PDF document text
- https://cdn.sqhk.co/fuluzezufe/aje4jd6/shareit_transfer_share_free_download.pdfIn PDF document text
- https://jetezoxow.weebly.com/uploads/1/3/1/3/131379231/wijodan.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://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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dc06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC06	4940 bytes
SHA-256: `9a8d26aa84615fb65e111020bd9bac4c51a74399def83aa44faa2d53c8e10b12`
`font_01_sfnt_off0000ed00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED00	10280 bytes
SHA-256: `b0a29fb89baa25136b8a04fa0f512a3326d1d5c492942d971dfe48158cf2f849`
`font_02_sfnt_off0001102a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1102A	16204 bytes
SHA-256: `a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd`
`font_03_sfnt_off00012557.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12557	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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