PDF malware analysis — malicious · a3a59e28a011cc81

MALICIOUS

PDF

52.0 KB Created: 2020-10-26 23:36:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 60dff5cde477b09895edb90042952fbb SHA-1: 2e386e5c03b1cc78a3422f32cbf902f27a4a96bb SHA-256: a3a59e28a011cc8154f421b02b3acae17dcaca0dd3788b6b2dd3bb09757c6feb

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to 'clumsy ninja level 99 hack apk' and embeds a link to a redirector. This link, https://ttraff.com/123?keyword=clumsy+ninja+level+99+hack+apk, is identified as malicious. The document also features a large number of links to disposable hosting, suggesting a link farm designed to distribute malware or facilitate phishing. No scripts were extracted, but the embedded URL and the nature of the heuristics strongly indicate a malicious intent to redirect the user to harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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.com/123?keyword=clumsy+ninja+level+99+hack+apk In PDF document text
- https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/visetilili-sowalog.pdfIn PDF document text
- https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/detoxedubavuvem_zodawi_wuxofeko.pdfIn PDF document text
- https://papazutizo.weebly.com/uploads/1/3/4/4/134467207/gevijabe-puvadagonakuf-fuvokusomufozef.pdfIn PDF document text
- https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/8b2e5e74.pdfIn PDF document text
- https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/dixemomot_boredirexokaj_nexiwufib_sepaniw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388413/normal_5f903b96dd4d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391909/normal_5f8eeaa76e868.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371514/normal_5f9132c8455d6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365655/normal_5f8cc167f3d1d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366324/normal_5f8bcaba2547e.pdfIn PDF document text
- https://xuxewisi.weebly.com/uploads/1/3/4/2/134235501/492510.pdfIn PDF document text
- https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/8432854.pdfIn PDF document text
- https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/1300040.pdfIn PDF document text
- https://galebekamabe.weebly.com/uploads/1/3/4/3/134305591/vukudetojitaduba.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/sql_database_download.pdfIn PDF document text
- https://s3.amazonaws.com/dugibabafod/82001107468.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/english_grammar_notes.pdfIn PDF document text
- https://s3.amazonaws.com/xanebavifamopez/9408171777.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0505/4775/3157/files/91463276055.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/3138/6041/files/53627146061.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/7305/1042/files/27080725664.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/2957/3031/files/zulovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5294/9913/files/how_to_open_iron_doors_in_minecraft.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
- http://www.gnu.org/licenses/gpl.htmlIn 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_off00006249.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6249	5440 bytes
SHA-256: `f375c87c3b3eafcaefa1dfb1a1fa3bdae90f675975abafd39463fcb7131d10ad`
`font_01_sfnt_off000074a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74A1	5852 bytes
SHA-256: `4898a065fb0c16b974e9a02d7df6b2166b133689e51422f07b6cdada0fbdb129`
`font_02_sfnt_off0000835a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x835A	10796 bytes
SHA-256: `73b0fcbea033a7acdeb0123f2760686f9b33775004920ce4d91e68c56afd0ab5`
`font_03_sfnt_off0000a8a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA8A6	16368 bytes
SHA-256: `e19c2e890c2ca05803eb2e56983a995bb0c55fa916207d025891136e591fca3b`

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