MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=fiction+vs.+nonfiction+worksheet+1st+grade'. The ML classifier also strongly indicated maliciousness. The document body text is heavily obfuscated but contains the same suspicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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/wix?keyword=fiction+vs.+nonfiction+worksheet+1st+grade In 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/1/0438/0576/9888/files/geforce_other_installations_are_running.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6545/9366/files/18210005737.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6043/5871/files/towukesilamuvonebulutajan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9117/3278/files/1481624782.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5969/2191/files/ielts_general_writing_task_1_sample_answer_band_9.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7679/7081/files/silomobopasupe.pdfIn PDF document text
- https://static.usrfiles.com/ugd/111c46_8c07f7834a0842729c9c86cb186a6aa4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_6068b535c0434f75b77597b0c4d02e5b.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0465/6790/files/44903193379.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2072/2080/files/70827165020.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_off000056c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56C5 | 6440 bytes |
SHA-256: 3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a |
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font_01_sfnt_off000066b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66B9 | 5504 bytes |
SHA-256: 753df44b128d87c200a6d568be8732ed095f8607dd6d72e7bbd84ac489517371 |
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font_02_sfnt_off00007994.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7994 | 1800 bytes |
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e |
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font_03_sfnt_off00008222.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8222 | 10700 bytes |
SHA-256: de7b8cef758c85d859740e501a86254f209b79cc90253ecfc61322fc1945a65f |
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font_04_sfnt_off0000a6e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA6E8 | 16036 bytes |
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550 |
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