MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text related to 'free handwriting worksheets' and a URL that aligns with the heuristic findings. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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) 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.ru/pify?keyword=free+handwriting+worksheets+for+1st+grade
- http://majidalo.dipconcaribbean.com/uploads/1/3/0/7/130739267/sejus.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/5580/0739/files/zesabarizutadupusodurod.pdf
- https://cdn.shopify.com/s/files/1/0432/4042/3587/files/15425659544.pdf
- https://cdn.shopify.com/s/files/1/0463/3388/6626/files/potica_aristteles_portugues.pdf
- https://cdn.shopify.com/s/files/1/0432/2269/6096/files/30112486203.pdf
- https://cdn.shopify.com/s/files/1/0432/9956/9829/files/dental_caries_book_free_download.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
- https://cdn.shopify.com/s/files/1/0429/1241/5907/files/vibimoz.pdf
- https://cdn.shopify.com/s/files/1/0428/7502/7619/files/tefoteduporagiwimijobavep.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000776e.bin18a60427f6198b78111b5265a76428229c2f678fbdb726321ccf6e430feff777 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x776E | 5300 bytes |
font_01_sfnt_off0000898a.bin10d551d3cbcd69a714baafc871d0d9c59ed757c4051ad731932ef4e2094ffd1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x898A | 9996 bytes |
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