PDF malware analysis — malicious · 8998d4f3a68e9f29

MALICIOUS

PDF

51.1 KB Created: 2020-10-26 03:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: fc162aba627fc949c0d28199f595ce0f SHA-1: 2f42d69fc9cb0e79902648292c3372f09106e8ce SHA-256: 8998d4f3a68e9f2968e36ab493af4457d63e5562a3135cc92549cdc79266862f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to distribute further malicious content or phishing pages. The document also exhibits characteristics of an SEO link farm, with numerous links to other PDFs, suggesting an attempt to manipulate search engine results or distribute spam. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a 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=impact+of+minimum+wage+in+malaysia+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4370525/normal_5f888af82fe72.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383321/normal_5f8c7ffb20caf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368777/normal_5f88635080a78.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369160/normal_5f88bc81ebc07.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381539/normal_5f8f9eacedbd9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375696/normal_5f8f7bc3174ea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403421/normal_5f93abdeaa447.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392867/normal_5f9540226129b.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/01bad8a7-a82d-4354-a8ad-1396ff42b0fc/tone_it_up_nutrition_plan_book.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f908431f-4de1-4c67-a71e-61544efcc03d/84510027627.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa9fc699-afff-4f3b-aefa-f0e29309e848/bimaxojivipizoguf.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fadd3802-bcaa-4ef4-bc37-946114209a53/17365080944.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1918/9915/files/cobb_county_clerk_of_superior_court_connie_taylor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9116/5333/files/how_to_group_worksheets_in_excel_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8584/0036/files/johnson_family_crest_norway.pdfIn PDF document text
- https://s3.amazonaws.com/mamukawaxatali/chaos_theory.pdfIn PDF document text
- https://s3.amazonaws.com/tonemakopinibem/43107227038.pdfIn PDF document text
- https://s3.amazonaws.com/gitipelut/research_on_english_speaking_skills.pdfIn PDF document text
- https://s3.amazonaws.com/gidibesuxi/baldur_s_gate_2_enhanced_edition_walkthrough.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0962/1665/files/56864384393.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2500/4706/files/jakanubabonage.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8445/7140/files/23015916996.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8556/8923/files/4th_step_inventory_fears_list.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_off000078a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78A0	5392 bytes
SHA-256: `144e0ebf79414d8a0ebe9f196e6d1ee389840de5348a502c7cb471f8b77dc04a`
`font_01_sfnt_off00008af3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AF3	11032 bytes
SHA-256: `7ad3aee29df8d84b315d895409c731dfaf6d7d88ce709cdaff22af5837317297`
`font_02_sfnt_off0000b07e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB07E	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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