PDF malware analysis — malicious · da40c3e33cde30f7

MALICIOUS

PDF

54.7 KB Created: 2020-10-19 01:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: fe06cee8706282612ee3369d913c6462 SHA-1: a86bb27d27dad502be9a3c35bf3df73ac71b426a SHA-256: da40c3e33cde30f7a8481282c1a414e610cf581141b3eb246314d6fcc47815dd

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.me/123?keyword=instrumentos+de+medicion+electricos+pdf In PDF document text
- https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/2692329.pdfIn PDF document text
- https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/pesegisekojen.pdfIn PDF document text
- https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/6960432.pdfIn PDF document text
- https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/takomef-dinekubufuka.pdfIn PDF document text
- https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/nemodesitunaj-xafopifoz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366627/normal_5f87626c4e4e8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368504/normal_5f89c350682e5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382948/normal_5f8b7aac39319.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369179/normal_5f8b1869190a4.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In 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/037b1d79-b58c-4f08-9450-7c68d9d6d850/zomekitiwuxovuxaz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b52a4f2f-e303-4262-ab86-6d199e775b47/dutajekuj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d601f25-db3e-4bd5-87b0-16372032d5a1/faxowoza.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4ef015ec-f8db-4311-a74e-fed1d11a157d/kepalinirif.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3bf5a45a-e895-40c6-8f8c-d4a397433219/mass_effect_andromeda_better_crafting.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6db50bcd-fd14-47c6-b870-0171a0fe1649/vijimijojovanopavomid.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2468/4955/files/suzuki_violin_book_2_imslp.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1512/6685/files/cualidades_de_la_redaccion_coherencia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1898/5894/files/kojusutalat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7777/7061/files/relodegebalokex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/9548/9189/files/75638608530.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9697/4508/files/military_surplus_poncho_liner.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/5644/2777/files/57995784430.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_off00008ac3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AC3	1872 bytes
SHA-256: `39b129c131df48ad291fdfc3fe95b68dad5847617f5c549b8af553cd9de9b2d2`
`font_01_sfnt_off00009395.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9395	5028 bytes
SHA-256: `4c3d74a87f27cc5501196693dc488e880297063b353e3b8e26425c9a52b550f6`
`font_02_sfnt_off0000a499.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA499	12000 bytes
SHA-256: `279578707ec3faae84cf9e767728cfc4f989acd7da5be4930349ff4e1d4ec125`

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