MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'ctet answer key december 2020 pdf download' and a visual download button lure, suggesting a social engineering pretext. The PDF also hosts a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, which likely serve to distribute the malicious payload.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=ctet+answer+key+december+2020+pdf+download In PDF document text
- http://files.cleartaxreturns.co.uk/uploads/1/3/0/7/130776590/5291570d117e5.pdfIn PDF document text
- http://files.selfmovementca.com/uploads/1/3/2/6/132683330/bazawadotiromo.pdfIn PDF document text
- http://files.camarillochamber.org/uploads/1/3/1/4/131438899/97139404cfcb.pdfIn PDF document text
- http://files.justinsrun4hope.com/uploads/1/3/0/7/130775506/bameveravosuxekiwed.pdfIn PDF document text
- http://files.sopoochtraining.com/uploads/1/3/2/8/132815961/kawivibugakovuj.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/1/0439/5050/6152/files/88678476443.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8297/2326/files/tegejokagov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/muxumokiligizajapite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0845/6865/files/fotapibaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/jazodifegobetolu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7316/6744/files/informatica_mdm.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7554/2950/files/san_jose_tv_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9618/7815/files/kevuvalibejoniwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5856/9120/files/talisman_dark_souls.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9587/5989/files/85431034888.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4211/1637/files/nibof.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1791/8875/files/dopuvepowag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8164/6758/files/lawawajizuz.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_off00007094.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7094 | 5880 bytes |
SHA-256: 71bb7651c32b2abca662b8cc9ea917dbd8d41f416406c1374d9c69bcd34d9507 |
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font_01_sfnt_off00008495.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8495 | 10512 bytes |
SHA-256: 18ab370a903765197be9e629e6be88ad48439ab738ac98884063d39366ddbad5 |
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