MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wb?keyword=mathematical%20methods%20notes%20pdf'. This indicates a social engineering attempt to trick users into visiting a malicious site under the guise of academic material. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify domains but likely serving as a distraction or SEO manipulation. No scripts were extracted from this sample.
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.com/wb?keyword=mathematical%20methods%20notes%20pdf In PDF document text
- http://lisolis.asiehart.com/uploads/1/3/2/6/132681556/973418.pdfIn PDF document text
- http://lubar.littletoncrabappletrail.org/uploads/1/3/0/9/130969352/xuzafadudatizami.pdfIn PDF document text
- http://kovunu.discoverychilddevelopmentcenter.com/uploads/1/3/0/8/130873790/966637.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/1/0432/1784/6427/files/filariasis_diagnosis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0968/5157/files/escuela_fisiocratas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9221/3911/files/44018388556.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9799/5944/files/11493548224.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5353/7690/files/jewufefomuvuvapapiwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8778/2297/files/vofuvinodedelejexaxizone.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3437/6352/files/cds_2_2020_syllabus_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9961/9492/files/tuvuxuwuzimexupe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3444/files/5263455393.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1808/2711/files/ending_blends_worksheets.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_off00005b2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B2B | 5304 bytes |
SHA-256: 1e1b4c8ff9057232453c0272e7000673efe66a9677f10a2433206823046cb36d |
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font_01_sfnt_off00006d1d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D1D | 9836 bytes |
SHA-256: 865881060af3d71a54e7cb8a91f98099063bdb24b30e4f414c899609315d3a7a |
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