PDF malware analysis — malicious · df3812baf0fd3f77

MALICIOUS

PDF

51.9 KB Created: 2020-10-15 10:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: db424e893e259acd61b5750acd89ea4d SHA-1: 7d5d4fb4842a768320bc5a17212960ee65d885b9 SHA-256: df3812baf0fd3f77cae8b4fa81971be0ee3b162394174fafc37b2835a6d32ff7

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/123?keyword=xbox+game+pass+app+android In PDF document text
- https://site-1043534.mozfiles.com/files/1043534/mekadugipupijuxasajola.pdfIn PDF document text
- https://site-1038477.mozfiles.com/files/1038477/89817860166.pdfIn PDF document text
- https://site-1040618.mozfiles.com/files/1040618/78533733078.pdfIn PDF document text
- https://site-1040507.mozfiles.com/files/1040507/12324194526.pdfIn PDF document text
- https://site-1041501.mozfiles.com/files/1041501/sepukufijilomowanad.pdfIn PDF document text
- https://site-1037037.mozfiles.com/files/1037037/tejerimeluburibapunofopul.pdfIn PDF document text
- https://site-1038529.mozfiles.com/files/1038529/lonijeviropiduvuzupumaw.pdfIn PDF document text
- https://site-1043853.mozfiles.com/files/1043853/93959685750.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366357/normal_5f8722eec5fe5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365620/normal_5f874edb3b13c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367640/normal_5f8755c632221.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365583/normal_5f87ce560ebf7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367617/normal_5f877198adf53.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365546/normal_5f87b1850bab2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365586/normal_5f875d816a2fc.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/1/0430/4224/2709/files/funagibatolu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4447/0938/files/58613383320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8468/3166/files/34974351485.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0485/8635/8949/files/42610130629.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8631/5684/files/royal_envoy_campaign_for_the_crown_level_59.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/892f0724-907c-4cdd-9970-79cdb15198f7/32541703276.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b4c84d0-ad59-4597-bfec-a45dfd707d10/49447856324.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/86f1c4a3-7f4d-4585-8e02-71f01304d16f/58147327584.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9da4b106-7019-445e-b6ff-93f90e4fbb82/nemusur.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c1244e7d-ae27-4829-8a09-7ef9e0296202/96818291105.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_off00007f7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F7D	3304 bytes
SHA-256: `e9df1abf47a688c52bbf36275161d4c71dd3d5463c3e540779115c3c600865d9`
`font_01_sfnt_off00008b63.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B63	5432 bytes
SHA-256: `8315897db1ecfc011240ad19787033f7d9518655ce43ede99bfccda424d156aa`
`font_02_sfnt_off00009dc0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9DC0	10524 bytes
SHA-256: `45bf6c0555d2b283a022a551fc4da778f32e578c7d4a847590197dc1a3f0c2d0`

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