MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many of which point to a redirector service that is flagged as malicious. The document body, though heavily obfuscated, includes a URL that appears to be part of a phishing lure related to educational worksheets. The presence of multiple external PDF links, including a link farm, suggests an attempt to drive traffic to potentially malicious content.
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.com/pify?keyword=adding+and+subtracting+integers+practice+worksheet+pdf In PDF document text
- http://files.valuetrainsusa.com/uploads/1/3/1/6/131636825/740c75f538b0.pdfIn PDF document text
- http://files.superiormachineandfab.com/uploads/1/3/1/0/131069899/8351974.pdfIn PDF document text
- http://xojutux.bancroftcenterofchinesemedicine.com/uploads/1/3/1/4/131408024/5659613.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/1/0430/9162/4097/files/psychological_assessment_by_kaplan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0762/2817/files/temikanugotadarimoxomeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3910/3912/files/doa_setelah_membaca_surah_yasin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1223/5159/files/repipigaporiboju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3070/8375/files/lomanulatesifesob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1003/0748/files/16672106165.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7027/5237/files/kelivo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6545/9366/files/pefipite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1466/8959/files/cancer_de_mama_sinais_e_sintomas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6263/1326/files/15283674618.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7162/5621/files/aerated_concrete.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8955/9705/files/the_causes_of_bantu_migration.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_off00005bf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5BF8 | 5672 bytes |
SHA-256: 359865f6cff52fc1d496f6844b613a484f279d8568a580780460fa8b2fc7d1fe |
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font_01_sfnt_off00006f4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F4D | 13220 bytes |
SHA-256: 848a961350f7a26e36577a7de7da6262f82c81045d5e53f2f07e49b2bfef3f70 |
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