PDF malware analysis — malicious · 6044342eb5587811

MALICIOUS

PDF

45.4 KB Created: 2020-10-24 13:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: e5c380004fbf58708aed6021fdc3c725 SHA-1: eb05dfcd05e78b18cb9f4b21346ff818969caa34 SHA-256: 6044342eb5587811f21d6f3e7963559bdd148ade360c3185fee5f5d06c4175ed

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.link/123?keyword=reflejos+arcaicos+en+el+recien+nacido+pdf`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to other PDF documents, suggesting an attempt to manipulate search engine results or drive traffic. No scripts were extracted from this sample, but the presence of embedded URLs and the redirector link strongly indicate a malicious intent to redirect users to harmful content.

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://ttraff.link/123?keyword=reflejos+arcaicos+en+el+recien+nacido+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4392463/normal_5f92264fa943d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369923/normal_5f90434a34576.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374857/normal_5f897023cc2f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367622/normal_5f8745ed0e96a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369509/normal_5f8dda4cd0524.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381297/normal_5f91f4d62cbfc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371261/normal_5f88b51268db6.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://s3.amazonaws.com/xarojapi/basic_concept_of_political_science.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/wukarisejibonadariz.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/26448712977.pdfIn PDF document text
- https://s3.amazonaws.com/nimuwet/gta_vice_city_cheat_codes_for_pc_all.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/3008/3248/files/cell_phone_addiction.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/9631/2482/files/xinodovuranud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8962/4224/files/48719326006.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/3879/1582/files/download_novel_wuthering_heights_bahasa_indonesia.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/00b9f882-3bc2-4afa-8df6-9e8b5054d0fc/pitikak.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fc03b4a2-818e-4549-a99b-f6bee09aea71/28023739088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/7952/7321/files/8759706638.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0485/7040/0928/files/lasexak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/5867/1015/files/42481396941.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_off00006551.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6551	4940 bytes
SHA-256: `e02d8fdfea57c99f32ab884c3a8e1273b8289bb0d9b19e4fd7c2e1a2a4f6c431`
`font_01_sfnt_off0000762c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x762C	10412 bytes
SHA-256: `b11c8dff33496bb46a186a5668064ca784b087d6029f41112c1d8273af70e372`
`font_02_sfnt_off00009830.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9830	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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