MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating malicious redirection and link farming, specifically pointing to a redirector URL that is known to be malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into clicking it for a deceptive download. The presence of embedded URLs and the ML classifier further support the malicious nature of this file.
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=faringoamigdalitis+bacteriana+tratamiento+pdf In PDF document text
- http://files.marianohenestrosa.com/uploads/1/3/1/4/131453194/3325329.pdfIn PDF document text
- http://files.learningforlittlepeoplepreschool.com/uploads/1/3/2/6/132682076/jepolax.pdfIn PDF document text
- http://files.globaltesoltraining.org/uploads/1/3/0/8/130813887/jojuje_lojufobatupuwo_gonixamugo_vameliwiwivi.pdfIn PDF document text
- http://files.londonrecordingstudioexperience.com/uploads/1/3/0/8/130814021/1ade4be964.pdfIn PDF document text
- http://files.carrielwells.com/uploads/1/3/1/0/131071145/9151427.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/1/0432/4609/2443/files/pezasupuvuxod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7685/1614/files/wild_combatant_s_waistguard_of_cruelty.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5488/1185/files/company_profile_design_template_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8000/8359/files/xelejukasidaki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5755/2277/files/souled_out_lyrics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2208/8354/files/pilolipidum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7129/9999/files/all_sorting_algorithms_in_data_structures.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0043/0746/files/vezivadotujuxivarijovano.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0348/5092/files/stevens_model_87a.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1510/0822/files/80331909315.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6434/5255/files/vuzamonajiwit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8100/6244/files/historia_y_evolucion_del_cerebro_humano.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_off0000c2f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2F2 | 5568 bytes |
SHA-256: ebd16b2cd10af23abc6b4ef367eed3ab8d55a467dd89c62b994f3ab8af423e9b |
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font_01_sfnt_off0000d5ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5CA | 10428 bytes |
SHA-256: 4f033ae01cdbd12f186ae051c4d42d7fb359b3bf978465d5d68d8a69925d79e2 |
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