MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers this heuristic. The presence of a mass external PDF link farm suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign links, ultimately leading to the malicious redirector.
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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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.cc/pify?keyword=triangulated+irregular+network+pdf In PDF document text
- http://bobedew.solonoidstudio.com/uploads/1/3/1/1/131164239/3035676.pdfIn PDF document text
- http://files.colearninglab.org/uploads/1/3/2/6/132682048/josubekuvujujapasoji.pdfIn PDF document text
- http://files.gowoonlee.com/uploads/1/3/1/3/131382320/vinasakaj.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0447/8749/9157/files/nomenclature_of_aldehydes_and_ketones.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4257/0402/files/10704768176.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/1312/3744/files/basic_guitar_chords_chart_for_beginners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4610/9345/files/sipirerizoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4546/9858/files/boy_scout_cooking_merit_badge.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/65107766539.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9477/8791/files/28815912417.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6842/2309/files/ftce_math_5-_9_practice_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7608/4117/files/lelomesut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4837/0333/files/famujofaviwaxif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9999/4789/files/gw2_cooking_500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3503/1712/files/descargar_resucito_cantos_del_camino_neocatecumenal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4803/2666/files/17006039491.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000065c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65C6 | 5020 bytes |
SHA-256: ac86c117873a2d597b619ffe3faca1900aa3f27712153a6cc1c961c7fc0b294f |
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font_01_sfnt_off000076f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76F5 | 10228 bytes |
SHA-256: 6d737a381e90fc4cbb1e1b222e0d951ad927bb5b8cdade147597f221f4261428 |
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font_02_sfnt_off000099f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99F3 | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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