MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text suggesting it is a worksheet, likely a lure to encourage clicks. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.
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.cc/pify?keyword=binomial+expansion+worksheet+with+answers+pdf In PDF document text
- http://files.springshine.us/uploads/1/3/1/3/131384127/sulezogop-judaz-kazavo-virukide.pdfIn PDF document text
- http://files.gftrails.ca/uploads/1/3/2/6/132681409/79e1a4c.pdfIn PDF document text
- http://files.aikenhistoryfchs.com/uploads/1/3/0/8/130873876/7992591.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9938/2170/files/18_wheeler_games.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6124/7129/files/nufukexetowewurij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2312/3100/files/94703965743.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2764/5095/files/wow_classic_alliance_leveling_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9353/9478/files/31651721249.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8855/9780/files/50072251915.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9232/7077/files/ctfd_urban_dictionary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9063/1064/files/54710791914.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8009/5646/files/jinagiwetipof.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8307/9592/files/74757461947.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2639/0933/files/lagidemuguzowepele.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4093/1991/files/tasugojum.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/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F61 | 5368 bytes |
SHA-256: 7876478bc1659113fdbebf3a35f037dd7887dec3e659be552acae2fe74d5f969 |
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font_01_sfnt_off000072bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72BD | 5556 bytes |
SHA-256: a8ccca06eb2a19973cc3425bf046e8ccb8ea375452e14ea4f69b66bca8a124da |
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font_02_sfnt_off0000858c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x858C | 8668 bytes |
SHA-256: 584c3d44c808ca6d9c2067965d1c7d2ec9bd3674b3ba40a4947ed5f73df8ff88 |
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font_03_sfnt_off00009673.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9673 | 13920 bytes |
SHA-256: d75ab4553347cefca713c07c225015f7aefac4020ff0f0c3bc40833efaa43aba |
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