MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded URLs that point to a link farm, indicating a malicious intent to redirect users. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its lure, but the link farm is sufficient evidence of a malicious redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.cc/wb?keyword=pdfsharp%20invoice%20sample In PDF document text
- http://files.valleyharvestmarathon.ca/uploads/1/3/1/4/131407665/d94f427ef63b22.pdfIn PDF document text
- http://files.dowhatyoulovenyc.com/uploads/1/3/2/6/132682739/2a11a.pdfIn PDF document text
- http://files.travelingnurses1.com/uploads/1/3/1/4/131438471/2017e.pdfIn PDF document text
- http://files.muzideas.org/uploads/1/3/2/6/132681336/d0d3924a1e.pdfIn PDF document text
- http://files.ljubaavvakumova.com/uploads/1/3/2/7/132740637/duwigol-fuwojofakek-wabedokatu-duwinu.pdfIn PDF document text
- http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdfIn PDF document text
- http://files.stefanobazzano.com/uploads/1/3/0/7/130776069/pegutawoxibojov-gosikirematolij.pdfIn PDF document text
- http://files.mathgrub.com/uploads/1/3/2/8/132814624/dotetini.pdfIn PDF document text
- http://files.tandesoleilmorrobay.com/uploads/1/3/0/7/130775655/pumagesive.pdfIn PDF document text
- http://files.schonestandardschnauzer.com/uploads/1/3/1/3/131398000/zuremuze.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://bokisutedex.files.wordpress.com/2020/06/56648395281.pdfIn PDF document text
- https://jefukuvanowi.files.wordpress.com/2020/07/32153552799.pdfIn PDF document text
- https://motifomimiwa.files.wordpress.com/2020/06/vojazutebup.pdfIn PDF document text
- https://duwopizemole.files.wordpress.com/2020/06/24239474504.pdfIn PDF document text
- https://sekojejun.files.wordpress.com/2020/07/20865827867.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8865/0142/files/84388188104.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5298/2684/files/51622274825.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5129/4619/files/42493207298.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8289/9871/files/25165477376.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2670/1726/files/xerukujuru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5821/7631/files/kusazuzijekolabibupi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.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_off00007b69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B69 | 5164 bytes |
SHA-256: 0c2e86c68619b2b432d7083abc4dc4d3523f4ec89bfefbf3bd73bf640ec422b4 |
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font_01_sfnt_off00008cc2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CC2 | 10116 bytes |
SHA-256: 05927f341bda7589da069c101247c524af6a3e4a3df4a7e1bdce9a63825e408c |
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