PDF malware analysis — malicious · 30917dc6db19727c

MALICIOUS

PDF

48.0 KB Created: 2020-10-26 23:16:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: bbe77ff28587dfdc0122f8edfeac5e72 SHA-1: 1527cc955408eb3776bbf4adc1092177e3ff8418 SHA-256: 30917dc6db19727cab80d1add3a97876170666c77ca47dd677a49f249acd7ca6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link that redirects to known malicious infrastructure, disguised with a lure related to a "gem generator app for clash of clans". The heuristic firings indicate this PDF is a redirector and part of a link farm, strongly suggesting a phishing or malicious redirection attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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://ggtraff.ru/123?keyword=gem+generator+app+for+clash+of+clans In PDF document text
- https://cdn-cms.f-static.net/uploads/4369508/normal_5f88709377e44.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365661/normal_5f8a4819b0e89.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368950/normal_5f87d1b3d667e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383449/normal_5f90182800d36.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372980/normal_5f8ef5a8230cf.pdfIn PDF document text
- https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/kokefoj.pdfIn PDF document text
- https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/tekisaju.pdfIn PDF document text
- https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/9752e3beb.pdfIn PDF document text
- https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/judife.pdfIn PDF document text
- https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
- https://guzebiba.weebly.com/uploads/1/3/4/3/134368687/1234862.pdfIn PDF document text
- https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/3373854.pdfIn PDF document text
- https://sobepaded.weebly.com/uploads/1/3/4/3/134305425/628490.pdfIn PDF document text
- https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/394bf738e701df.pdfIn PDF document text
- https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370280/normal_5f894806a7d5c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383567/normal_5f8ef475d1ec4.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
- https://cdn.shopify.com/s/files/1/0431/4647/7722/files/tiny_bikinis_dont_always_cooperate.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/1688/6678/files/download_game_cooking_fever_mod_apk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8391/5962/files/kufasigonalogu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/9957/4438/files/advanced_machine_learning_with_python.pdfIn PDF document text
- https://s3.amazonaws.com/vexeliku/xemot.pdfIn PDF document text
- https://s3.amazonaws.com/gifojuxaxeva/metabolismo_de_carbohidratos_lipidos_y_proteinas.pdfIn PDF document text
- https://s3.amazonaws.com/zonivezada/b._a._m._s_syllabus.pdfIn PDF document text
- https://s3.amazonaws.com/jarawaxanivu/18305928644.pdfIn PDF document text
- https://s3.amazonaws.com/tumasun/lee_child_tripwire.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_off00006cab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CAB	5200 bytes
SHA-256: `cc1303da6766eaaee3fef3c64ba92a1138bab47399b2a65dbac5aaf4879350db`
`font_01_sfnt_off00007e2e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E2E	11180 bytes
SHA-256: `85f782b54f32150bd1ce9810973c46ab9d1411db73826755fd37d5178d069c66`
`font_02_sfnt_off0000a42b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA42B	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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