PDF malware analysis — malicious · f6f64dd1ba3feebb

MALICIOUS

PDF

39.5 KB Created: 2020-11-07 09:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04

MD5: eeb9f7cc96e2933aac1328216230e320 SHA-1: 7b67e0e8c7594160bd7d66a72c758cb8e186709f SHA-256: f6f64dd1ba3feebb239fa489178c68a5ce0fa373b3d59b84d573307697a7b6bd

134 Risk Score

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.
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://gettraff.ru/wb?keyword=proofs%20in%20geometry%20worksheets%20with%20answers In PDF document text
- https://cdn-cms.f-static.net/uploads/4386622/normal_5fa10a1622bb5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377116/normal_5f959cee7cbd6.pdfIn PDF document text
- https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/5521397.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392195/normal_5f8f97961efa8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416796/normal_5f9761fd2affb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370560/normal_5f943e6a76af7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380219/normal_5f9bbb12286c8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374198/normal_5f916f7069ea6.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/66072848-84d2-4f3d-8a9e-b89ee611c35b/crucigramas_matematicos_para_secunda.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/48a519b3-759c-48a8-ad50-b37d69a71c4c/wovazivetokaserixawozupi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6bfbeb1b-4d17-4e58-8db0-591968093143/pineapple_door_knocker_history.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7e69ace6-c208-40e4-8c01-e0e65a533db8/53597956082.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d928e6b-5657-49e0-a977-fb2e61aa6207/berizejaregup.pdfIn PDF document text
- https://gibalon.files.wordpress.com/2020/11/porup.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/49f05c45-3791-49f8-aa65-c8a89d39d077/the_wadsworth_guide_to_research.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8bcd1d83-315f-4185-a17c-91e366dd8868/flight_patterns_by_sherman_alexie.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_off00005bdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BDF	5408 bytes
SHA-256: `53497ce8c4b2a1ca7aa106583bbd4c28d79b6918b8d84734977612b96c409e1d`
`font_01_sfnt_off00006e33.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E33	10268 bytes
SHA-256: `4fd2ada935a6df66d15d8d6c78caecc4e29b84568c23898ad3705794dcaaf5d9`

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