MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to academic material and the malicious URL, suggesting a lure for phishing or malware delivery. The ML classifier strongly indicates maliciousness, and the presence of a link farm heuristic further supports the malicious intent.
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=dbrau+date+sheet+2019+ba+1st+year In PDF document text
- http://lekaluvo.peppermintcinema.com/uploads/1/3/0/8/130874642/dozepigiwowal.pdfIn PDF document text
- http://wabera.kmkbooks.com/uploads/1/3/2/6/132681670/29762efd1e75.pdfIn PDF document text
- http://zekadete.alphatrucksolutions.com/uploads/1/3/1/6/131606228/bc291ce.pdfIn PDF document text
- http://wopol.affordablestoragebrownfield.com/uploads/1/3/1/4/131406390/kisolawiki.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6187/7663/files/wegob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3729/3718/files/listino_borsa_merci_bologna.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4541/9173/files/ap_sachivalayam_study_material_in_telugu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30551251375.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1117/7639/files/aws_dumps.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9850/5369/files/denepilupomozexubuwop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5672/4128/files/dikigeboran.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/1374/7367/files/cpr_aha_guidelines_2017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7246/3772/files/nuvured.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4166/8775/files/korut.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.gnu.org/licenses/gpl.htmlIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000738d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x738D | 5604 bytes |
SHA-256: c4107d886596f32dac4af1469309c9e859409f41543ccc09d808bac8e9e87fc1 |
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font_01_sfnt_off0000868c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x868C | 6148 bytes |
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157 |
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font_02_sfnt_off0000966c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x966C | 9876 bytes |
SHA-256: 70af27576150cc673495c5b264e02b48af3e385c41cc0fcd33b33bef19d534ea |
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font_03_sfnt_off0000b889.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB889 | 11160 bytes |
SHA-256: 55a2adcdde0823aff53a8418bfa06ea4a1afb62f77263365b5231babc5cb08da |
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