MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a high number of embedded links, many pointing to external PDFs, a technique often used for SEO poisoning or to host malicious content. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is part of a lure for 'business opportunities in nigeria'. The document body, though heavily obfuscated, contains the same URL. The presence of a visual download button further supports a malicious workflow.
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=business+opportunities+in+nigeria+pdf In PDF document text
- http://files.hellokels.com/uploads/1/3/0/7/130739344/cbc680.pdfIn PDF document text
- http://files.chan6es.com/uploads/1/3/1/0/131071056/nufiratobuf-vefutijekesazi-mudogu.pdfIn PDF document text
- http://files.arsenicmedia.com/uploads/1/3/1/1/131164440/aa46a0.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/1/0428/0716/5095/files/glossary_of_finance_and_accounting_terms.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4424/9499/files/jurnal_descriptive_text.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4583/8248/files/49532001591.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6307/3181/files/89271074921.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4832/8603/files/figujufizisupuli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9534/9661/files/49_countries_in_asia_and_their_capitals_and_currency.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0316/6372/files/xelubovafuxasek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7801/6406/files/40482050816.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5318/7221/files/hardest_brain_teasers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1816/5146/files/calf_muscle_strain_exercises.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3839/9912/files/82270956990.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6713/6413/files/25398934830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3240/4380/files/nanebuzuxogimasigo.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_off0000a25b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA25B | 5224 bytes |
SHA-256: d749a8d2c4bcdc5dd82c019e18cbfadb1c15f53bcc891d33e064c86443723886 |
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font_01_sfnt_off0000b436.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB436 | 10628 bytes |
SHA-256: 56b46c0b87e3a835f1c0f05c6ef74d0837b880ad0114c4f8b4319b2ea7e07bea |
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