MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to physics exercises. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure, and ML_NYX_PDF_MALICIOUS indicates a high probability of maliciousness. The primary attack vector appears to be directing users to a malicious site via a deceptive link within the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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=ejercicios+resueltos+de+caida+libre+fisica+1+en+pdf In PDF document text
- http://files.theplayfactoryplaygroup.com/uploads/1/3/2/6/132695813/vizakeper.pdfIn PDF document text
- http://files.psychoneirology.org/uploads/1/3/1/4/131455621/mawumuli-gotupebamopoxot-lixusogovam.pdfIn PDF document text
- http://files.ptnightout.org/uploads/1/3/0/7/130740432/ruzeximanuz_tivujap.pdfIn PDF document text
- http://files.neganeon.com/uploads/1/3/0/8/130873758/zataligijipifu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://vefevomite.files.wordpress.com/2020/07/65939059495.pdfIn PDF document text
- https://jolitogobase57815693.files.wordpress.com/2020/06/dosigokoder.pdfIn PDF document text
- https://bekakum.files.wordpress.com/2020/07/vubisarefirenezal.pdfIn PDF document text
- https://zusuxomo.files.wordpress.com/2020/07/53937344138.pdfIn PDF document text
- https://nezirirotur.files.wordpress.com/2020/07/21347825092.pdfIn PDF document text
- https://fajetiw.files.wordpress.com/2020/06/fegokivijekerofitin.pdfIn PDF document text
- https://pimudan.files.wordpress.com/2020/06/58829319698.pdfIn PDF document text
- https://sowupaxi.files.wordpress.com/2020/06/wobekumaduga.pdfIn PDF document text
- https://ditilepikap.files.wordpress.com/2020/06/jazigawobenimarilelunojuj.pdfIn PDF document text
- https://xojusapa.files.wordpress.com/2020/07/46130987315.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3963/8179/files/99661843890.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6127/2983/files/dutofixuwarogelezejosif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7188/9817/files/15525033315.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3646/7619/files/48044340136.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7140/6237/files/55831411897.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3504/0664/files/80384124912.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1125/2132/files/68157900196.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugogesobiwem.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000085c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85C8 | 6440 bytes |
SHA-256: 2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb |
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font_01_sfnt_off000095bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x95BD | 5256 bytes |
SHA-256: 7638ef0b197dbd4301f6c636d9340206e4ada01628525496924c9fbb5535421e |
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font_02_sfnt_off0000a79d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA79D | 3676 bytes |
SHA-256: 39878feba0496c8616ff3883a7711ba9d9f9e79980897da1cc02919626f283f6 |
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font_03_sfnt_off0000b599.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB599 | 10956 bytes |
SHA-256: b12720d1bbb3df782ef82517db5148b7c6b772ba43ce51e1dc61279a01f1978b |
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font_04_sfnt_off0000d94f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD94F | 16344 bytes |
SHA-256: f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89 |
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