MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=differential+calculus+bsc+1st+year+pdf', suggesting a lure to download further content or redirect to a malicious site. The presence of a link farm heuristic further supports the malicious intent of distributing links.
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.com/pify?keyword=differential+calculus+bsc+1st+year+pdf In PDF document text
- http://files.pcrconference.org/uploads/1/3/0/7/130738971/8877512.pdfIn PDF document text
- http://files.irvinedodream.org/uploads/1/3/1/6/131637218/jelemuwakifev-pukozuledasose-novibuvob-wetix.pdfIn PDF document text
- http://joveg.wppsfete.com.au/uploads/1/3/2/6/132681670/luzarifoxaxibixobe.pdfIn PDF document text
- http://files.cliffgloverpottery.com/uploads/1/3/2/6/132681409/wonazaf.pdfIn PDF document text
- http://files.esprit-de-core.com/uploads/1/3/1/6/131606201/5181262.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/1/0430/1615/9395/files/59478851435.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6392/6174/files/bupukaromexizalumeza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9775/9643/files/1156057472.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0369/9615/files/55995970171.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6507/4086/files/vujufigekugisa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5122/0133/files/populavikagiziwawomiwizus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2865/9869/files/rate_increase_letter.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3407/5558/files/zurusuzisowobugun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6189/4565/files/91090683018.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1010/4228/files/buget.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8339/9329/files/bedupefora.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2279/4395/files/jorasidogeforu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0527/0437/files/33783484789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3185/4247/files/10163937508.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006631.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6631 | 5440 bytes |
SHA-256: 7bd277a7f73a9f57825b0f0db8b645cb473ac1fb8f99a8cdff988cdc282f8639 |
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font_01_sfnt_off000078d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78D1 | 10224 bytes |
SHA-256: 38f4e5d04625fb8b48d9ad37e2446180d3225abc1bfa18d3734b379e0d3120c5 |
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font_02_sfnt_off00009bea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BEA | 16144 bytes |
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174 |
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