PDF malware analysis — malicious · 8c47097d1ffc7b4e

MALICIOUS

PDF

52.7 KB Created: 2020-10-29 10:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 7054314fc72bc9417c208c342ca1d96f SHA-1: e499687454f1fb28121dc82493539aa4276c2392 SHA-256: 8c47097d1ffc7b4e3d406ec842e74e2a77b6a55d552807b4cab1d75f4ebe7859

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded links that point to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Ley 154 puerto rico'. The presence of numerous external PDF links suggests a link farm or redirection scheme designed to obscure the final malicious destination. No scripts were extracted from this sample, but the primary attack vector appears to be directing users to malicious URLs.

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/strik?keyword=ley+154+puerto+rico In PDF document text
- https://cdn-cms.f-static.net/uploads/4369909/normal_5f8b267d8a4e6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379605/normal_5f8bdd72184fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407571/normal_5f91ffae4181e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383470/normal_5f9044517eb4d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382949/normal_5f8c16b1728f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365634/normal_5f870913686df.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365642/normal_5f87118f21692.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387411/normal_5f91fd844720e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9239699d-ac24-4bd5-bb5b-d8e5c5166422/post_elementary_school_calendar.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/287b455b-e09f-465f-a652-599e19f28c38/lotus_type_72_tamiya_mini.pdfIn PDF document text
- https://s3.amazonaws.com/jefobexapulow/xisexapawivuwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7241/3079/files/game_center_account_on_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/1052/5853/files/35076074713.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/administrao_direta_e_indireta_questoes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/1700/7014/files/22450730740.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d4523c3-6f0f-480b-adbb-940f7257dcd7/wukebujemisapafisarojofi.pdfIn PDF document text
- https://s3.amazonaws.com/memul/business_communication_full_notes.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/93956822813.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/6928/3738/files/capas_del_modelo_osi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0319/9138/files/working_principle_of_gas_chromatography.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9251/8057/files/61629872286.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/37831eef-ffc5-45df-b3b7-c8e49e7df42d/wupiroguxem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/2399/9391/files/90619756709.pdfIn PDF document text
- https://s3.amazonaws.com/nawosineromigi/nordictrack_exp_1000_instruction_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/0106/1791/files/26710385851.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0495/6310/7480/files/rikemelojepaxilunu.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008f03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F03	4812 bytes
SHA-256: `6f5183e298717fd7f033dbfbee46c7a84a5475a201006dd167ed9399522869da`
`font_01_sfnt_off00009f97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F97	11396 bytes
SHA-256: `322e1a292455216206604bab926e56191584fa4f328af57ce88b5520daeb9373`

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