PDF malware analysis — malicious · 9213d0e083d0dfb0

MALICIOUS

PDF

45.5 KB Created: 2020-10-19 11:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: 75850e7db2b0b663d600a31978ffaa11 SHA-1: 9b22cd3fa183b8244408999577d80f616afef03c SHA-256: 9213d0e083d0dfb02aab8e2edb787eeeb8d18b62e6cf3c531a5f9b3cfdcce2fa

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.com/123?keyword=voice+google+download+apk In PDF document text
- https://cdn-cms.f-static.net/uploads/4367277/normal_5f8a76ca35ce6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365599/normal_5f877ced35b30.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367919/normal_5f87f5748fc6d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369766/normal_5f8a13c270386.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368495/normal_5f89e3591f2ee.pdfIn PDF document text
- https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/365ec1f.pdfIn PDF document text
- https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/410cf.pdfIn PDF document text
- https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/5e8d256f2b.pdfIn PDF document text
- https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/010f035b21e9f.pdfIn PDF document text
- https://tavumake.weebly.com/uploads/1/3/2/7/132740551/nanalu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366982/normal_5f873104d17dd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366029/normal_5f86fbc21d439.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://uploads.strikinglycdn.com/files/07b32a50-2fb5-4f52-8561-b485b0c771cb/tutot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e2387a54-3c3a-48c4-a3f5-79993cacbc3c/razovuboza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/5421/7388/files/essay_writing_format.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8797/6864/files/keninirore.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/4492/5340/files/fallout_3_wanderers_edition_load_order.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2838/8772/files/troy-bilt_2550_psi_2.3_gpm_gas_pressure_washer_parts.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/9664/4016/files/vaxuxavaj.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_off000067ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67EC	4796 bytes
SHA-256: `0207fa0f3ec90f3269179838f942a2a518dd0fd6a215d3e2cb3d30a9df287a52`
`font_01_sfnt_off0000784b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x784B	10052 bytes
SHA-256: `fafd21a89256efa3de80731601ee9de5fb2efa6525fd296c37f63235dfd6e78b`
`font_02_sfnt_off00009ace.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9ACE	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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