PDF malware analysis — malicious · a5aace5806d6521d

MALICIOUS

PDF

81.5 KB Created: 2021-04-04 00:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: da0f3be020bd4e019028ccccc9068169 SHA-1: 81931b02ed9021dfa5a6a5dd2011fc5630e14343 SHA-256: a5aace5806d6521d8b724abcd3a898f8b86017504556dcbb40f4f589c800aad7

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of SEO spam and link farming, with numerous external links pointing to various domains. The document body, though heavily obfuscated, contains keywords related to 'Super Mario Bros game genie codes', suggesting a lure to attract users searching for game cheats. The presence of many external links, some hosted on disposable domains, indicates a likely attempt to drive traffic to potentially malicious sites or to manipulate search engine rankings.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

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://ponafet.ru/wix?keyword=super+mario+bros+game+genie+codes+walk+through+walls PDF link annotation
- https://janolonixo.weebly.com/uploads/1/3/3/9/133987325/gerurabomad.pdfIn PDF document text
- https://sukorason.weebly.com/uploads/1/3/4/5/134578332/dewemoku.pdfIn PDF document text
- https://xezorilim.weebly.com/uploads/1/3/4/5/134588859/nosiv-melapa-fefan.pdfIn PDF document text
- https://repugololenip.weebly.com/uploads/1/3/4/8/134880500/cdb8280c4f7d.pdfIn PDF document text
- https://dumuzuvo.weebly.com/uploads/1/3/4/6/134695275/96e74.pdfIn PDF document text
- https://tilapenudulaw.weebly.com/uploads/1/3/1/6/131607943/1221152.pdfIn PDF document text
- http://vudifabofugejij.medianewsonline.com/62066826404.pdfIn PDF document text
- https://xonufukagupunim.weebly.com/uploads/1/3/1/3/131384400/vekulopiguru.pdfIn PDF document text
- https://tezubowaxax.weebly.com/uploads/1/3/4/6/134640868/zuwemakepuxo_xofudagiwaxon_zutapakalagerob_juxefoje.pdfIn PDF document text
- https://kovibokasekur.weebly.com/uploads/1/3/4/8/134880184/mixovotod.pdfIn PDF document text
- https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/57d0e3e68.pdfIn PDF document text
- https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/limexo.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://lenigabemez.epizy.com/59511029318.pdfIn PDF document text
- https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_78074adfede740d1aabad6a10c480482.pdf?index=trueIn PDF document text
- https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_c932a1a5ea96476ab44576d373aa36b9.pdf?index=trueIn PDF document text
- http://mowumaja.epizy.com/52077107033.pdfIn PDF document text
- https://0bdb67af-4c57-4a6e-9706-714cc80719f5.filesusr.com/ugd/fc840b_6af493743622453a908fafcb115e0b8c.pdf?index=trueIn PDF document text
- http://bemijeranokawu.epizy.com/gavewefapemel.pdfIn PDF document text
- https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_6017e777ea3048e8b13268ad992908cc.pdf?index=trueIn PDF document text
- http://jisijuvod.myartsonline.com/kuginileda.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_off0000f17b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF17B	5768 bytes
SHA-256: `f01ac0a2723d1985fb066541bc5673424c0144ae455bb17c3f73c977e6275b95`
`font_01_sfnt_off000104ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104ED	10852 bytes
SHA-256: `e9c7b314db93b0d76c04c20dde3b5646f9277b3848e437bd8221b10fb9d7ad0a`
`font_02_sfnt_off00012a20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A20	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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