MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is further obfuscated by a query parameter related to 'bteb exam routine 2020 pdf download'. This indicates a social engineering lure to trick users into clicking the malicious link, likely leading to further malware delivery or phishing. 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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=bteb+exam+routine+2020+pdf+download In PDF document text
- http://files.prospectingmimeticfractals.com/uploads/1/3/1/4/131453124/fotoli.pdfIn PDF document text
- http://files.leannwiggins.com/uploads/1/3/1/4/131437599/3127643.pdfIn PDF document text
- http://files.craftedbydiclaro.com/uploads/1/3/2/7/132712093/1407296.pdfIn PDF document text
- http://buzeg.starbrighttherapydogs.org/uploads/1/3/1/4/131407089/kenozotoxol.pdfIn PDF document text
- http://files.craniosacraluk.com/uploads/1/3/1/0/131069897/906c273288823.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/1/0430/7874/6261/files/tatonipux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8648/7455/files/star_wars_rouge_squadron_cheats.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7365/9292/files/arabic_alphabet_pronunciation_in_bangla.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9217/3217/files/vegokafikoxobaguwofomud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7043/0115/files/jquery-_1._10._2._min._js.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8728/0790/files/19142587112.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0182/8760/files/96820342776.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3128/1312/files/tuvizajiwuji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6826/8456/files/tableau_de_l_alphabet_phontique_international.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9718/5701/files/58842216420.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000065a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65A1 | 5632 bytes |
SHA-256: d62ce6f81109438b0afdf2b980baee4b978074974909a8ee8695eea57b69eb88 |
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font_01_sfnt_off000078cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78CB | 13160 bytes |
SHA-256: 1346af142916f20323df827ff5621ae730f1fbaf4445e1d00831736da9d4bb31 |
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font_02_sfnt_off0000a1a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA1A9 | 10060 bytes |
SHA-256: 088b64eabb79eba1cf161b72358ed3709aa664f4ee3ade4b04509d4ab04507f0 |
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