MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to `https://ttraff.cc/wb?keyword=ca%20ipcc%20books%20online%20pdf`. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on `cdn.shopify.com`. The document body, though heavily obfuscated, contains text related to 'ca ipcc books online pdf' and the redirector URL, suggesting a lure to a malicious site. The presence of a callback phishing lure heuristic further supports the malicious intent.
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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/wb?keyword=ca%20ipcc%20books%20online%20pdf In PDF document text
- http://files.pcconcertseries.org/uploads/1/3/2/6/132681452/d450f8116911.pdfIn PDF document text
- http://files.elliskerleyfoundation.org/uploads/1/3/0/8/130814397/muvesadoruvimujovu.pdfIn PDF document text
- http://files.jamesbev.com/uploads/1/3/0/8/130874284/mebogibome.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/1/0427/5005/0460/files/zugabopesajuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3951/5039/files/jorevefoja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3429/files/guravosi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5135/0166/files/3252974554.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5442/3464/files/tera_ninja_guide_2017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9713/7056/files/14741453998.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/rizupaxodelazosogamu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2444/0729/files/juluzuwevavul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8935/3117/files/vuvarajimapanimamulaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2252/3288/files/rekafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4479/8613/files/godonedes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5144/9496/files/21383322630.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8273/5006/files/93082795850.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1380/8033/files/96020546742.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_off000057eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57EB | 5164 bytes |
SHA-256: e77a6bf959fac1f281b2b326731ecdbac4c760cc6e4183cb058e44e0d4b8afa1 |
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font_01_sfnt_off00006987.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6987 | 14316 bytes |
SHA-256: aa6f7bf2e309c396362304728efffaad7dd75790f01023450052069291611e8c |
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