MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=booth+algorithm+in+computer+architecture+and+organization+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, suggesting a link farm designed to distribute malicious content or phish users.
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=booth+algorithm+in+computer+architecture+and+organization+pdf In PDF document text
- http://files.orionreads.org/uploads/1/3/1/8/131857442/19480f70.pdfIn PDF document text
- http://files.christianlindke.com/uploads/1/3/0/7/130775229/bopurenulakoke.pdfIn PDF document text
- http://files.texashollandlops.com/uploads/1/3/1/3/131379371/7953459.pdfIn PDF document text
- http://files.onceuponatimewells.com.au/uploads/1/3/1/4/131438847/f628b67a.pdfIn PDF document text
- http://kelegid.nscasa.org/uploads/1/3/0/8/130813747/1f01c19df36d9.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/1/0433/7372/3800/files/pafavalerikituviwesoveve.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1112/1057/files/xavepirerifupizinusob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9902/7611/files/84519959049.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4431/6070/files/pdf_mail_merge_plugin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6937/2576/files/84323134912.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3981/7890/files/42448027875.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7574/7483/files/11583008824.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9213/2508/files/amarakosha_malayalam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8768/1954/files/que_es_el_aprendizaje_significativo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3015/1330/files/nudugorupatuwawawuvoxiji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0976/7584/files/79072853179.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5787/2039/files/gedenejesavowolidapi.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
- 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
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005cf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CF5 | 5488 bytes |
SHA-256: 361a22566e79a388c539907ff14a5774a8c013b2aea6bbea18113dc4d16bbf51 |
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font_01_sfnt_off00006f41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F41 | 6300 bytes |
SHA-256: fecdc1be9fbca5edf5f71ffa26a665fc07b69ef0d92ce07c3236febf95bc503b |
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font_02_sfnt_off00007e9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E9A | 10080 bytes |
SHA-256: a342a99c6ef6bd4d1c687e551765c732a66e650450f8663b277a431e511fcb90 |
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