PDF malware analysis — malicious · aa07b2224621c5e2

MALICIOUS

PDF

40.5 KB Created: 2020-10-27 09:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: 2f5fcc1aec32870334bff0eec6fe932a SHA-1: 37c8db172ea994e3e00f55bd4d6cb6e7f988dc99 SHA-256: aa07b2224621c5e2afcca01e232d099dd4ffc1236c4777830b965d90950b0061

184 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ttraff.me/123?keyword=fallout+76+possum+badges+2020 In PDF document text
- https://cdn-cms.f-static.net/uploads/4410016/normal_5f97071106ea1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368969/normal_5f90b9c1091ca.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371495/normal_5f8b66c256586.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383916/normal_5f8d4d328b430.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377380/normal_5f93c33fc63aa.pdfIn PDF document text
- https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/5cefa.pdfIn PDF document text
- https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/cb409170.pdfIn PDF document text
- https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/dimabanak.pdfIn PDF document text
- https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/8269696.pdfIn PDF document text
- https://denibizokitig.weebly.com/uploads/1/3/4/3/134340328/9557557.pdfIn PDF document text
- https://guburumo.weebly.com/uploads/1/3/4/3/134322172/kobujarekefalil.pdfIn PDF document text
- https://nupariredarig.weebly.com/uploads/1/3/4/3/134357859/mijakanarezer.pdfIn PDF document text
- https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/xinafaxeki-dekoj.pdfIn PDF document text
- https://lozagazol.weebly.com/uploads/1/3/4/2/134266804/zifenu.pdfIn PDF document text
- https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/wekusuko.pdfIn PDF document text
- https://fibigator.weebly.com/uploads/1/3/4/3/134313363/zokeganiwagefo.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/jakujakula/kogipupubepuxixokugigol.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/lujixorusasirerigofol.pdfIn PDF document text
- https://s3.amazonaws.com/vatakefojunib/xunum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4302/7104/files/windows_live_mail_error_id_0x800ccc0b.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/5213/8137/files/tuvidivufirufojake.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_off00005dc5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DC5	5788 bytes
SHA-256: `76fe4ebb9c40861fb1bf5fad510a682272000aa9c256c022c9b00849507b8823`
`font_01_sfnt_off00007169.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7169	10332 bytes
SHA-256: `77a7b042d3f02eb58756694fdb04d81c80a8a61c65ec937aac7e0189861b938c`

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