MALICIOUS
274
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a mass of external links, masquerading as a business English lesson plan, to lure users into downloading potentially malicious files. One of the embedded links, https://ttraff.com/wb?keyword=business%20english%20lesson%20plan%20pdf, is identified as a malicious redirector. The document also explicitly instructs the user to install a remote-support tool, indicating a social engineering pretext for malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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.com/wb?keyword=business%20english%20lesson%20plan%20pdf In PDF document text
- http://files.agingobsession.com/uploads/1/3/1/8/131871648/jurotised_berereli.pdfIn PDF document text
- http://files.technicalserviceprovidernetwork.org/uploads/1/3/1/8/131871488/5103431.pdfIn PDF document text
- http://files.thesanctuaryatmn.com/uploads/1/3/1/8/131856184/d83262d07.pdfIn PDF document text
- http://files.stevensonpto.com/uploads/1/3/0/7/130776327/logobov.pdfIn PDF document text
- http://files.stitchedwithcare.com/uploads/1/3/1/3/131383624/dowumi-wefudazebukop-wivavin-tajewowe.pdfIn PDF document text
- http://files.aston-financial.co.uk/uploads/1/3/1/3/131398497/46de60ee58.pdfIn PDF document text
- http://files.coveyrising.com/uploads/1/3/0/7/130739970/89076ffb56.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://nolifajidame.files.wordpress.com/2020/06/39307584065.pdfIn PDF document text
- https://zawaxus.files.wordpress.com/2020/07/zoguxezodogofebugomexom.pdfIn PDF document text
- https://pogunuji.files.wordpress.com/2020/07/74463531786.pdfIn PDF document text
- https://rebaxoduzun.files.wordpress.com/2020/06/529662947.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5147/5351/files/repos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98455436519.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6893/9672/files/4053599924.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6482/8838/files/9016623349.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9526/1348/files/91281306977.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_off00008504.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8504 | 5060 bytes |
SHA-256: ae85ea2d662b0961440eed4697a0a87a5ef06e2f0415f8cc1e48fab25265ac12 |
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font_01_sfnt_off00009628.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9628 | 9980 bytes |
SHA-256: 60afd8fe5326a5c09e3dceb78a17575593b7e26a811c7d8d709efe1a7b58e342 |
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