PDF malware analysis — malicious · d9cc3a6b8bf39f5b

MALICIOUS

PDF

44.8 KB Created: 2020-10-25 00:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 7c001980ee7344e1d68d7ecdbaae303d SHA-1: 8ecf0c1ccab2e18ac051a3b07b640629f7333e55 SHA-256: d9cc3a6b8bf39f5b377f10b96f4dd57964f49876e3da5d889b68636c1a9dcfbf

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://ggtraff.ru/123?keyword=livro+para+sempre+sua+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4369506/normal_5f949f59ad41f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366055/normal_5f8f25fb993bf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387430/normal_5f8fc45a756de.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369631/normal_5f88ee997c7dd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379964/normal_5f8aeb3c8b4a9.pdfIn PDF document text
- https://sowofinonapira.weebly.com/uploads/1/3/4/3/134361296/fef533c.pdfIn PDF document text
- https://gofolonuk.weebly.com/uploads/1/3/4/3/134313710/sujagu-vojuwuvegaxeri-puzagur.pdfIn PDF document text
- https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/pogozagipoz-limazonivarinin-litexexakokabod-zalasudawaragur.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373992/normal_5f8f6c4620524.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379852/normal_5f9125eff2f2b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385413/normal_5f91c862ef440.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368221/normal_5f8c17b781912.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373297/normal_5f91e64c21546.pdfIn PDF document text
- https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/tilorekojadera_wiwukup_bevatetuxuna_rarakitida.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
- https://vapesokon.weebly.com/uploads/1/3/4/3/134329795/7237077.pdfIn PDF document text
- https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/suwedevotomelasube.pdfIn PDF document text
- https://butebipibib.weebly.com/uploads/1/3/4/2/134265815/mosugejixotafare.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365613/normal_5f87ced053ce8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370089/normal_5f890608b97b3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368748/normal_5f8951761d8f5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406775/normal_5f949ef343b7c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368997/normal_5f87bc7b2cdff.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/1560/9761/files/moto_e_cruise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8967/3883/files/41347785533.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_off00006b9d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B9D	5156 bytes
SHA-256: `b215ffce150ca3c2533cfa32734a2a118b29d0871dbf08fa6a36bb3d4515392b`
`font_01_sfnt_off00007d1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D1B	12912 bytes
SHA-256: `82a50d9648de88e84976b33c67263914e72a6a797adeeaf148fecf6e8df19f5c`

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