MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The primary URL, 'https://ttraff.cc/pify?keyword=bts+pneumonia+guidelines+2018', is identified as malicious and likely serves to redirect the user to a further, potentially more dangerous, destination. The document body also contains numerous links to external PDF files, suggesting a link farm or a method to obscure the true malicious intent. The presence of embedded JavaScript further supports the malicious nature of the document, potentially used for exploitation or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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/pify?keyword=bts+pneumonia+guidelines+2018 In PDF document text
- http://zonixel.worldvision.com.sg/uploads/1/3/1/8/131857334/7774995.pdfIn PDF document text
- http://files.brightstonefarm.com/uploads/1/3/0/7/130775902/judebajesuwa.pdfIn PDF document text
- http://files.davejohnsoninteriors.com/uploads/1/3/0/7/130739084/seguwubafij_xajuzilezezopu.pdfIn PDF document text
- http://tadusub.annikascaketutorials.com/uploads/1/3/0/8/130815017/0b0ee487a7f.pdfIn PDF document text
- http://files.meteamusic.org/uploads/1/3/2/6/132681560/guvera_tigadob_tozuvanuj_lofibu.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/1/0432/8092/4837/files/19025816575.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3325/5323/files/76879672921.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9469/5329/files/konekomegavodufirukup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2665/3079/files/ruvatigoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2474/3591/files/93064960134.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2136/8472/files/what_is_macintosh_hd.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7394/4217/files/braveheart_theme_piano_sheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9802/9733/files/dutetisoxusukusozume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sigejorivuzogekos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5525/9560/files/85741589163.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7685/9544/files/mr_coffee_coffee_grinder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13139855908.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1856/7335/files/final_acceptance_certificate.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7629/6605/files/bestiario_hp_lovecraft.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_off00006ccc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CCC | 5752 bytes |
SHA-256: d600db1009784879944e8e66861fd865f9d4f5679c938b49a56d14174bb5ed75 |
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font_01_sfnt_off0000804c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x804C | 10912 bytes |
SHA-256: 9d4a9a734617a6b8071c53ae64bab472fc2818d0a4206bd394f1e60135acee83 |
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