PDF malware analysis — malicious · 801ca162708d31e0

MALICIOUS

PDF

46.7 KB Created: 2020-11-06 16:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01

MD5: d236086b1497a018dba1a3398b3aca29 SHA-1: bb8e64cdcc1e0a9d117f1a38a3af59f0427a8918 SHA-256: 801ca162708d31e03cefab3c53f4f11e98150b531e0fe3774c08cec7f4f7416a

194 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://traffking.ru/aws?keyword=put+me+in+the+zoo+pdf+free In PDF document text
- https://cdn-cms.f-static.net/uploads/4413969/normal_5f97f9c66c834.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365549/normal_5f9bc708439bc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366625/normal_5fa4d52870df7.pdfIn PDF document text
- https://resojuwow.weebly.com/uploads/1/3/4/3/134351964/pabebovugevogexus.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385850/normal_5f915939ba172.pdfIn PDF document text
- https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/62359cebce6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454562/normal_5fa49374b246c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369920/normal_5f977ba4752f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367912/normal_5f8ac75751518.pdfIn PDF document text
- https://derodaju.weebly.com/uploads/1/3/1/6/131606282/ae413c2dd30e6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413696/normal_5f959b0c1dd72.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365540/normal_5f88f10083258.pdfIn PDF document text
- https://gemiwanot.weebly.com/uploads/1/3/4/4/134495393/fokog.pdfIn PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/3e75a4e696b2f2d.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/2cc47508-404d-475f-889f-d6c4c9e282d1/sojiviturarari.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_off000077f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77F2	4912 bytes
SHA-256: `8d35b6f04199ce9e1294b0de2e63e77cf8bc51b01baba9e1952d0a2ecb573a62`
`font_01_sfnt_off00008889.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8889	11108 bytes
SHA-256: `8d220b13347caf5fe24b025db6d0768a50756c48917aadd7d3c239e9eb31cde2`

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