PDF malware analysis — malicious · f4b06a8808f7486c

MALICIOUS

PDF

43.7 KB Created: 2020-10-28 12:02:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 41dbbbc26a5a81ef5c23016cb21600b5 SHA-1: 1e0aae0081c31118ed200be725bdf66c11b0aaac SHA-256: f4b06a8808f7486c3f69245461787c594f30e764425517a228b7c66641265932

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.ru/123?keyword=fact+and+opinion+worksheets+grade+2 In PDF document text
- https://cdn-cms.f-static.net/uploads/4368969/normal_5f8acec121d46.pdfIn PDF document text
- https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/7290192.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389793/normal_5f96cdb99401d.pdfIn PDF document text
- https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/goguxovimonesu-xumibesinesufo-tirobefexar.pdfIn PDF document text
- https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/475a4fbec18.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369509/normal_5f90dff13b8fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381735/normal_5f8b2ce6cc3fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374859/normal_5f8a9d6ec237b.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/1/0484/3120/2458/files/1262278995.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2352/2216/files/primary_spelling_inventory_classroom_composite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/3200/8598/files/variedades_de_aguacate_en_colombia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1941/1878/files/65018344752.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/kobek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2148/1622/files/32252045500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7831/2625/files/rivunon.pdfIn PDF document text
- https://s3.amazonaws.com/xakapudakadu/keximodomekuwebeti.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_off00006b60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B60	5544 bytes
SHA-256: `bfa350124170ff9ba947019a3dd95c89f74b388d45576273e3d89de5009632d6`
`font_01_sfnt_off00007e50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E50	10316 bytes
SHA-256: `25d7954aa7b49bf6427a1258fb77b6a68322d6d5f593a2836a8409ba0e2bac17`

Open this report in the interactive analyzer, or submit your own file for analysis.