MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, contains references to educational materials and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous links to external PDFs, including benign ones on Shopify, indicates a link farm strategy to potentially improve search engine ranking for malicious content.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=anatomy+of+flowering+plants+class+11+ncert+solutions+pdf In PDF document text
- http://files.yellowstonebendcitizenscouncil.org/uploads/1/3/1/8/131856186/pafikukos_xufoperuduku_sefuzemijexeguf_bapatujosu.pdfIn PDF document text
- http://sobalupi.consolidatedpropertyservices.org/uploads/1/3/1/0/131070786/gatapikovukokebuwug.pdfIn PDF document text
- http://files.laslenguitasclasses.com/uploads/1/3/2/6/132696598/besususik.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/1/0427/8432/5798/files/malaria_treatment_guidelines.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5340/7646/files/rurevusalosojitamimutal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5113/8715/files/juxego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5433/3093/files/89303191025.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9376/9894/files/43643103552.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2667/7913/files/zakukikagejumifodemofevut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9608/8481/files/evolution_of_sporophyte_in_bryophytes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7379/7285/files/pofawujupuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0862/1719/files/bevaligokatupolomezebamel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7719/7221/files/xebopi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3443/4969/files/27078091187.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_off000060b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x60B8 | 5708 bytes |
SHA-256: 9c86989c34d46b95bb8664cace360b89c67a1069423b9d3f3895900daac7e827 |
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font_01_sfnt_off00007434.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7434 | 10280 bytes |
SHA-256: 80a9aac6955b21cbe0a46f3fcacb7802c5c623e37af472861c182204a61ba7ba |
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