PDF malware analysis — malicious · 4b0864125ee1146c

MALICIOUS

PDF

39.8 KB Created: 2020-10-16 22:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: b5661e8f6d5676990b1e8b8f5e7abc9b SHA-1: e6c190f35e10bec01f1bae183d6fbe3658740aec SHA-256: 4b0864125ee1146cee7243858cdb63555d5313c1190dfee9287bcba7c480ce03

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://ttraff.me/123?keyword=manual+reloj+citizen+eco+drive+e870 In PDF document text
- https://cdn-cms.f-static.net/uploads/4366336/normal_5f87246f8ad1d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366659/normal_5f8779150e7b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365549/normal_5f87333f05a83.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367667/normal_5f87602a612c3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f86fedf1dec2.pdfIn PDF document text
- https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/4942765.pdfIn PDF document text
- https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/3757a8ce6b3c95.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1158663.pdfIn PDF document text
- https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/baroraditurax.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366401/normal_5f871688edf7c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373241/normal_5f891af2bedda.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367938/normal_5f88f62e0851c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366336/normal_5f872387f1399.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369518/normal_5f89a30880e35.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370768/normal_5f8978a5200ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368956/normal_5f89284a9fb2f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367927/normal_5f87af578eb81.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/6be9e21e-e809-496b-82ab-c73ef824d0ef/wililevowizososozab.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/17275116-70dd-4c84-9b96-f10ab8827b97/98821698518.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5cb7c44-5472-4d43-8528-0e0174124ef6/6741360918.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eda9e8de-f13a-492d-90f1-28fe8fdf6a25/89586165701.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f8b0c46-65d1-44c0-a1ca-03491aeb9ba6/68521920477.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e574f0ce-816d-42f3-aac1-c9b71f1ea856/wixavozufawetojimewa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/364e9f13-539e-46fe-b8c6-a4b7c282bf29/13589450871.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f29c634-bc64-4d26-a8b2-70d25b2b44fb/74386166121.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_off00005be1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BE1	5360 bytes
SHA-256: `e3c03107a703377f5658f413b36f629fd77e9899b65bd182cfe8158b0bb3e46d`
`font_01_sfnt_off00006e45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E45	10556 bytes
SHA-256: `ed8dacf7c6f2a14526cd799aee91f08626d7f151168281b0101217360fc12c54`

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