MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous links to external resources, masquerading as exercise materials. One of these links, 'https://ttraff.ru/pify?keyword=adjectives+and+adverbs+of+manner+exercises+pdf', points to a known malicious redirector. The document body is heavily obfuscated, but the presence of this malicious link and the heuristic firings indicate a phishing or redirection attempt. 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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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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=adjectives+and+adverbs+of+manner+exercises+pdf In PDF document text
- http://reboze.jessicaharperyoga.com/uploads/1/3/1/4/131409090/jujamuduronugal.pdfIn PDF document text
- http://files.capecodspeechlanguagepathologists.com/uploads/1/3/1/4/131483603/0db9440.pdfIn PDF document text
- http://kejoxogis.jiaweitay.com/uploads/1/3/1/4/131454065/3250348.pdfIn PDF document text
- http://files.stirlingguesthouse.co.uk/uploads/1/3/0/7/130776826/vawobunox.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/1/0434/7976/1061/files/53696986103.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2598/7741/files/32845576742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4624/7332/files/51083091634.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7006/2754/files/infectious_diseases_clinical_short_course.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2363/7402/files/momipexifefa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0417/4233/files/97804527949.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3803/1518/files/doxikiwivapodupikuvuku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0069/1879/files/defali.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/97828816348.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7315/8806/files/48668109292.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8482/5247/files/95631455930.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_off00005109.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5109 | 5604 bytes |
SHA-256: 933b669382dc105f32a128157d6e6cdb8c9649369169ad69cf6f1dfbbf751e33 |
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font_01_sfnt_off0000640c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x640C | 12932 bytes |
SHA-256: 11a7562047f2ed3ccdc3977da06cc3caa35ebf8b7323ad78bbede0e03f3e993d |
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