MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector URL. The document body, though heavily obfuscated, contains text that appears to be a syllabus and the malicious URL itself. This suggests a phishing or malware distribution attempt, likely using the syllabus as a lure to encourage clicks on the malicious link.
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.ru/pify?keyword=nctb+jsc+syllabus+2019+pdf In PDF document text
- http://files.haywardfitnessfanatics.com/uploads/1/3/0/8/130874413/dugen.pdfIn PDF document text
- http://selepuzo.heddagrevleottesen.com/uploads/1/3/2/8/132814930/b502c0512d7da.pdfIn PDF document text
- http://files.symmetry-careers.com/uploads/1/3/1/4/131454699/razulil.pdfIn PDF document text
- http://pexuvid.yogasomething.com/uploads/1/3/1/4/131437402/lemefizelekenad_maxixip_dotut_xibetodu.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/1/0431/5863/4650/files/44835195701.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/fobaxunumabagag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1104/7575/files/29765836922.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8376/7713/files/innotek_dog_collar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5436/6877/files/meeting_attendance_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3653/3151/files/59424275130.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2675/7270/files/91729586914.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7490/2430/files/69831056538.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9386/8187/files/tusiwovijidelutima.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8395/4328/files/4325628636.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3489/3718/files/26895379676.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0009/4112/files/ano_ang_tanggol_wika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5497/9477/files/lru_cache_implementation_python.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7895/9775/files/coleman_hot_water_on_demand.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
- http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006a4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A4B | 5824 bytes |
SHA-256: e4fc2bf3fc5954e5015179fe2a9bf59e47abf4a9044fb1ef9d618ec5e95dde3b |
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font_01_sfnt_off00007e37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E37 | 16412 bytes |
SHA-256: b2a8853372f0f941b848561b1db113285d721e4d920d662afeb3517b8c0195fa |
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font_02_sfnt_off0000b04b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB04B | 10256 bytes |
SHA-256: acbe9d2b3848a3df88f22c695ac3f1118044a02cc6b075e0b4d8fd68c638ca0c |
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