PDF malware analysis — malicious · 3f76180d0cd28e6f

MALICIOUS

PDF

49.3 KB Created: 2020-10-26 09:10:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: c422fd9e74ca64fbd651be6443c6cd60 SHA-1: 2ba514fd09a07ceb0c18859efcade020c863f3d0 SHA-256: 3f76180d0cd28e6f920252e910ff980bba40eeae9339ff301f1316c0328f58ac

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of many external links suggests an attempt to manipulate search engine results or direct users to potentially harmful sites.

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.cc/123?keyword=durga+mata+mantra+in+telugu+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4387711/normal_5f9312fc887ea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369185/normal_5f8b375c905e1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408479/normal_5f938aed83482.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374181/normal_5f8e4742785da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378393/normal_5f95d70a5ded5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378406/normal_5f964835ad924.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366397/normal_5f94f75bc6da0.pdfIn PDF document text
- https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8554420.pdfIn PDF document text
- https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/kakifisuw-kuluke.pdfIn PDF document text
- https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/5602418.pdfIn PDF document text
- https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/3883684.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/36876289-ea5b-4a3d-8259-cd53adff4690/99646009892.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9884192a-64d2-4ae5-9dff-dde91018f72d/sexagumoj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ff010f12-c476-43f2-85b4-3895a9a2f702/dagatubanapux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b2cccfa-f91d-4c9a-8356-77d033390852/plurilingualism_and_translanguaging_commonalities_and_divergences.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1228c7d5-832f-4184-8032-8e62d926cfb1/dekivuxulinanatuta.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9501ae0f-d443-48d6-ba03-efb3b93ece4c/watch_romeo_and_juliet_1996_full_mov.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/960c2646-aa0e-4a32-bdff-859892fd1a84/gamemolajoraxafi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6929/0149/files/mixed_future_tenses_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/4108/6359/files/picnic_at_hanging_rock_script.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/5710/6074/files/mobil_1_filters_any_good.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0477/3029/4940/files/simple_random_sampling_research.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/3864/4645/files/civil_procedure_textbook.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_off0000759e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x759E	4956 bytes
SHA-256: `e9d9512d708bf377bab5f486be7bd49c7c65437197532a6f33badde73b09d4cf`
`font_01_sfnt_off0000865c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x865C	10316 bytes
SHA-256: `49bf1fafa8184f60225379b735268e1d01e427a1c823bc4b413f38817448949f`
`font_02_sfnt_off0000a965.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA965	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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